Anvil Lake National Recreation Trail
Trail Quick Facts
About Anvil Lake National Recreation Trail
The Anvil Lake National Recreation Trail is one of the most popular and historic trail systems in Wisconsin’s Northwoods. Located within the Chequamegon-Nicolet National Forest near Eagle River, this 12-mile network of interconnected loops has been welcoming outdoor enthusiasts since the 1930s when it was originally constructed by the Civilian Conservation Corps. Designated as a National Recreation Trail in 1978, the system showcases the rich natural heritage of northern Wisconsin through mature hardwood forests, stands of hemlock and white pine, and diverse terrain ranging from gentle beginner-friendly paths to challenging expert runs.
The trail system consists of seven distinct trails that can be combined in various ways to create loops ranging from 2 to 12+ miles. A unique feature of Anvil Lake is its year-round accessibility and multi-season use. During spring, summer, and fall, the trails serve hikers and mountain bikers seeking to explore the Northwoods landscape. In winter, the system transforms into one of the region’s premier cross-country skiing destinations, with groomed tracks for both classic and skate skiing. The trail’s centerpiece warming shelter, equipped with a fireplace and frequented by hand-feeding chickadees, provides a memorable mid-trail experience that has delighted visitors for generations.
Difficulty Level
The Anvil Lake trail system offers something for every skill level, which contributes to its popularity. Individual trails are clearly marked with difficulty ratings ranging from beginner to expert. The East Trail and West Trail are generally level and suitable for novice hikers, bikers, and skiers. The Lake Loop and Ninemile Trail feature rolling terrain appropriate for intermediate users. The Devil’s Run lives up to its name with steep inclines, technical descents, and challenging rock and root obstacles that demand advanced skills and experience.
Most visitors find the main 6.6-mile loop to be moderately challenging, taking approximately 2-3 hours to complete at a comfortable pace. The 446 feet of elevation gain is spread throughout the route, creating varied terrain without overwhelming sustained climbs. The trail’s excellent marking system and maintained condition make it accessible to families and beginners while still offering challenge for experienced outdoor enthusiasts.
Forest Ecosystem
The Anvil Lake trail traverses through a mature northern hardwood forest ecosystem that represents one of the finest examples of this forest type in the region. The dominant species is sugar maple, which creates a stunning autumn display of orange and red foliage. Large stands of white pine, some dating from 1888, tower over the trail, while eastern hemlock, some specimens older than the pines, create shaded groves throughout the system.
The forest canopy also includes red oak, yellow birch, and basswood, with many trees reaching 22-28 inches in diameter. The understory varies from open, park-like areas to dense hazelnut thickets. Coarse woody debris, standing snags, and tip-up mounds provide critical wildlife habitat. This diverse forest structure supports a rich community of woodland birds, making the area designated as an official watchable wildlife site, particularly notable for woodland warblers during migration seasons.
Historical Significance
The trail’s construction by the Civilian Conservation Corps during the 1930s represents an important chapter in American conservation history. The CCC, established during the Great Depression, employed young men in public works projects across the country. The stone and log warming shelter they built at Anvil Lake stands as a testament to their craftsmanship and continues to serve trail users nearly a century later.
The trail’s expansion and designation as a National Recreation Trail in 1978 recognized its importance as a public recreation resource. Today, it stands as one of the oldest continuously operated trail systems in northern Wisconsin, bridging the historical legacy of the CCC with modern sustainable trail management and outdoor recreation practices.
Trail Loops & Route Options
The Anvil Lake trail system’s interconnected design allows visitors to customize their experience based on time, ability, and preferences. Each of the seven trails offers distinct terrain and scenery.
Difficulty: Easy | Terrain: Mostly level
Description: These trails combine to form an 8-kilometer loop groomed for both classic and skate skiing in winter. The terrain is gentle and forgiving, making them ideal for beginners, families, and those seeking a relaxed forest walk. The wide trail corridors accommodate multiple users comfortably. In summer and fall, these sections provide excellent hiking and are wide enough for comfortable mountain biking.
Highlights: Mature hardwood forests, accessible terrain, good for wildlife viewing
Difficulty: Moderate | Terrain: Rolling hills
Description: The Lake Loop offers a perfect intermediate challenge with rolling terrain that provides variety without extreme difficulty. This trail brings users closer to Anvil Lake at certain points, offering glimpses of the water through the trees. The undulating terrain keeps the experience engaging while remaining accessible to most users.
Highlights: Varied elevation, lake views, mixed forest types
Difficulty: Moderate | Terrain: Rolling to hilly
Description: The Ninemile Trail extends the system’s reach and offers more sustained rolling terrain than the Lake Loop. This trail is popular with mountain bikers and intermediate skiers who want a workout without the extreme challenges of Devil’s Run. The forest transitions through varied stand types along this route.
Highlights: Longer continuous sections, good cardio workout, less traffic
Note: During summer months, this section can have higher insect activity, particularly deer flies and mosquitoes. Bug spray is recommended.
Difficulty: Difficult/Expert | Terrain: Steep, technical
Description: This is the trail system’s signature challenge. Devil’s Run features steep inclines and descents, technical rock and root obstacles, and terrain that demands advanced skills. Mountain bikers find it exhilarating but challenging, while winter skiers need strong technique to navigate the steep sections safely. This trail is not groomed for classic skiing tracks, providing more technical downhill runs.
Highlights: Technical challenge, adrenaline rush, bragging rights
Warning: Not recommended for beginners. Use appropriate caution and know your limits.
Difficulty: Varies | Terrain: Mixed
Description: Military Trail follows an old military road corridor and connects to the secondary trailhead on Military Road (Forest Road 2178). This trail provides an alternate access point and is wide enough for skiing and biking. The historical significance of following an old military route adds interest to the journey.
Access: Trailhead parking available on Military Road south of Highway 70
Popular Loop Combinations
Short Family Loop (2-3 miles): East Trail to Lake Loop – Easy to moderate terrain suitable for families with children.
Classic Main Loop (6.6 miles): The most popular route combining East, West, Lake Loop, and portions of Ninemile – Rated moderate overall with 446 feet elevation gain.
Extended Challenge Loop (10+ miles): Complete system including Devil’s Run – For experienced hikers/bikers seeking a full day adventure.
Winter Ski Tour (5-8 km): Groomed loop utilizing East, West, and Lake Loop trails – Excellent for classic or skate skiing.
Navigation Tips
Trail junctions are well-marked with directional signs indicating trail names and difficulty levels. Most trails are designed as one-way routes, particularly important for mountain bikers and skiers. Trail maps are available at both main trailheads (Highway 70 and Military Road). The warming shelter serves as a central landmark and resting point for all routes. During winter, trail conditions and grooming reports are posted at the trailhead and available online.
Planning Your Visit
Permits and Fees
Required Fees:
- Day Use Pass: $5 per vehicle (honor system, envelopes at trailhead)
- Annual Pass: $30 for Chequamegon-Nicolet National Forest Recreation Pass
- Registered Campers: Day use fees do not apply if you’re camping at Anvil Lake Campground
Valid America the Beautiful Passes: Annual, Senior, Access, Military passes accepted
Camping Permits: Separate fees apply for Anvil Lake Campground ($15-20 per night). Reservations recommended during peak summer weekends. Contact: Eagle River Ranger District at 715-479-2827
Directions to Trailhead
From Eagle River (Primary Access):
From the intersection of US Highway 45 and State Highway 70 in Eagle River, drive east on Highway 70 for approximately 8-10 miles. The main parking area is located on the south (right) side of Highway 70, just past the Anvil Lake Campground entrance. Look for signs indicating “Anvil National Recreation Trail” or “Anvil Lake Recreation Area.”
GPS Coordinates (approximate): 45.92°N, -89.25°W
Secondary Access (Military Road):
From Highway 70, turn south onto Forest Road 2178 (Military Road) approximately 0.5 miles past the main trailhead. A second parking area provides access to the trail system from the southeast side. This is also the designated snowshoe trail access point in winter.
From Nearby Cities:
- Rhinelander: ~30 miles southwest via Highway 47 and Highway 70
- Minocqua: ~25 miles west via Highway 70
- Green Bay: ~115 miles south via Highway 41 and Highway 70
Best Times to Visit
Peak Hiking/Biking Season (May-October):
- Late May to June: Spring wildflowers, emerging leaves, moderate temperatures (50-70°F), fewer insects early season
- July to August: Warmest weather (65-80°F), lush forest canopy, excellent for swimming in Anvil Lake. Peak insect season – bring bug spray!
- September to October: Fall colors peak late September/early October, comfortable hiking temperatures (45-65°F), much fewer insects, stunning autumn foliage display
Winter Season (December-March):
- Cross-Country Skiing: Best conditions typically January through March when consistent snow coverage is present
- Trail Grooming: Trails are regularly groomed for both classic and skate skiing (except Devil’s Run)
- Snowshoeing: Dedicated snowshoe trail accessible from Military Road trailhead
- Winter Temperatures: 10-30°F typical; windchill can be significant
Shoulder Seasons: April and November can be muddy and unpredictable. Trail conditions may be poor during spring thaw and late fall freeze/thaw cycles.
Weather Considerations
Northern Wisconsin weather varies significantly by season and can change rapidly.
Summer (June-August): Daytime highs 65-80°F, nighttime lows 50-60°F. Afternoon thunderstorms possible, especially July and August. High humidity common. Insect activity peaks in July – deer flies and mosquitoes can be intense, particularly along Ninemile Trail and in shaded, damp areas.
Fall (September-October): Ideal hiking conditions with daytime temperatures 45-65°F, crisp nights 30-45°F. Peak fall color typically occurs late September through mid-October. Early October can bring first frost. Rain is common but usually lighter than summer storms.
Winter (December-March): Cold and snowy with average highs 15-30°F, lows 0-15°F. Wind chill can make conditions feel much colder, especially on exposed sections. Snowfall accumulation varies year-to-year but generally provides good ski conditions January through March. Always check grooming reports before winter visits.
Spring (April-May): Variable and transitional. April sees snowmelt and mud. May brings emerging greenery and wildflowers with temperatures 45-65°F. Trail conditions can be poor early season due to mud and standing water.
Nearby Amenities
Eagle River (9-10 miles west): Full-service town with restaurants, grocery stores, gas stations, outdoor retailers, lodging options, and medical facilities. The Eagle River Ranger District office (715-479-2827) is located at 1247 E. Wall St. and provides current trail conditions, maps, and forest information.
Anvil Lake Campground (adjacent): 18 campsites with fire rings, picnic tables, vault toilets, and drinking water. The campground sits at 1,740 feet elevation among mature maple, hemlock, and pine trees. Features historic CCC-built stone and log picnic shelter. Swimming beach and boat launch on 377-acre Anvil Lake.
Services in Eagle River include: Multiple restaurants and cafes, grocery stores (Festival Foods, others), sporting goods/outdoor stores, bike shops, gas stations, lodging (hotels, motels, resorts, vacation rentals), hospital (Aspirus Eagle River Hospital – 14-bed critical access facility)
What to Bring
Essential Hiking/Biking Gear (Summer/Fall)
The Ten Essentials:
- Navigation: Trail map (available at trailhead), phone with offline maps, compass
- Sun Protection: Sunscreen, sunglasses, hat (sections can be exposed)
- Insulation: Light jacket or fleece (weather can change quickly)
- Illumination: Headlamp or flashlight if planning longer hike
- First-Aid Kit: Basic supplies including tick removal tool
- Fire: Matches/lighter (emergency only, fires only in designated areas)
- Repair Kit & Tools: Basic tools for bike repairs if mountain biking
- Nutrition: Snacks and lunch for longer loops
- Hydration: Water bottles (1-2 liters); no water sources on trail
- Emergency Shelter: Rain jacket at minimum
Clothing Recommendations:
- Moisture-wicking base layers
- Hiking pants or shorts (long pants recommended for tick protection)
- Sturdy hiking boots or trail running shoes (waterproof helpful in spring/after rain)
- Extra socks (trails can be damp)
- Rain jacket (afternoon storms possible)
- Layering pieces for temperature changes
Bug Protection (Critical July-August):
- Insect repellent with DEET or picaridin
- Head net (strongly recommended for Ninemile Trail in peak bug season)
- Long sleeves and pants can help reduce bites
- Consider treating clothing with permethrin before trip
Mountain Biking Additions:
- Helmet (required)
- Repair kit (spare tube, tire levers, multi-tool, pump)
- Gloves
- Eye protection
- First aid specifically for potential scrapes/falls
Winter Gear (Cross-Country Skiing/Snowshoeing)
Skiing Essentials:
- Cross-country skis appropriate for skill level and trail conditions
- Ski poles
- Boots compatible with ski bindings
- Classic and/or skate skis (most trails accommodate both)
- Wax kit for classic skis or waxless skis
Winter Clothing:
- Layered system: base, insulation, outer shell
- Warm hat/headband
- Gloves or mittens (bring spare pair)
- Neck gaiter or balaclava
- Moisture-wicking long underwear
- Windproof outer layer
- Extra layers for warming shelter stops
Winter Safety Items:
- Extra food (body burns more calories in cold)
- Insulated water bottle (or warm beverage in thermos)
- Emergency blanket
- Fire starter
- Headlamp (winter days are short)
- Whistle
- Fully charged cell phone
Optional but Recommended:
- Birdseed for feeding chickadees at warming shelter (small quantity)
- Camera or phone for photos
- Binoculars for bird watching
- Field guide to birds or plants
- Trekking poles (helpful on hilly sections)
- Small backpack (hydration pack works well)
What NOT to Bring
- Glass containers (plastic only)
- Weapons (except during legal hunting seasons with proper permits)
- Motorized vehicles (not permitted on trails)
- Pets during winter on groomed ski trails
- Drones (check current National Forest regulations)
Trail Facilities
Available at Trailheads:
- Parking areas (main Highway 70 location and Military Road)
- Vault toilets (pit toilets, wheelchair accessible at main trailhead)
- Trail maps and information kiosks
- Fee payment envelopes
On-Trail:
- Warming shelter (central location) with fireplace
- Additional vault toilet at warming shelter
- Trail signs and markers throughout
- Benches at select locations
NOT Available:
- Drinking water on trail (bring all you need)
- Trash receptacles (pack it in, pack it out)
- Cell phone service (limited/unreliable)
- Equipment rentals on-site
Note: Equipment rentals for skiing and snowshoeing may be available in Eagle River at local outdoor shops. Check with the Eagle River Area Chamber of Commerce for current rental options.
Safety & Trail Conditions
Current Conditions
- Check current trail conditions at the USFS Anvil Lake Recreation Area page
- Winter ski conditions: Check Skinnyski trail reports for grooming updates
- Contact Eagle River Ranger District: 715-479-2827 for current information
- Spring trails may be muddy/wet until late May
- Fall hunting seasons (September-November): wear blaze orange for visibility
- Weather can change rapidly – check forecast before departure
Primary Hazards
Deer flies and mosquitoes can be intense during summer months, particularly on Ninemile Trail and in shaded, damp areas. Multiple trail reviewers report severe deer fly issues requiring liberal DEET application and head nets. Peak bug season is typically July through mid-August.
Prevention: Use 25-30% DEET repellent, wear head net in bad areas, consider permethrin-treated clothing, hike during midday when insects are less active, avoid dusk/dawn when mosquitoes peak.
Ticks are present in the Northwoods, particularly in spring and fall. Deer ticks can carry Lyme disease. After each hike, perform thorough tick checks on yourself, children, and pets.
Prevention: Wear long pants tucked into socks, use repellent containing DEET or picaridin, stay on trail center, wear light-colored clothing to spot ticks easily, shower within 2 hours of return.
If bitten: Remove tick with fine-tipped tweezers, pulling straight out. Clean area with antiseptic. Monitor for bull’s-eye rash or flu-like symptoms and seek medical attention if they develop.
Wet/Muddy Conditions: Trails can be damp even without recent rain due to forest environment. Waterproof or water-resistant footwear recommended. Spring (April-May) trails may have standing water and muddy sections.
Afternoon Thunderstorms: Summer thunderstorms can develop quickly. If you hear thunder, you’re close enough to be struck. Seek shelter immediately – don’t continue hiking. The warming shelter provides emergency shelter.
Steep Terrain: Devil’s Run and portions of other trails have steep grades. Risk of falls exists, particularly when wet or in winter conditions. Know your limits and don’t attempt technical sections beyond your skill level.
Black bears are present in the Chequamegon-Nicolet National Forest but encounters on the trail are uncommon. Bears are generally shy and avoid humans.
Prevention: Make noise while hiking (talk, clap periodically), don’t hike at dawn/dusk when bears are most active, never approach or feed bears, keep dogs leashed.
If encountered: Remain calm, don’t run, make yourself appear large, back away slowly while facing bear, speak in calm, firm voice, don’t make eye contact. Report sightings to ranger district.
Cold & Frostbite: Temperatures well below freezing combined with wind chill can cause frostbite on exposed skin within minutes. Dress in layers, protect extremities, watch for early signs (numbness, white/pale skin).
Hypothermia: Can occur even in moderate temperatures if you become wet and cold. Symptoms include shivering, confusion, fatigue. If suspected, seek shelter (warming cabin), add dry layers, consume warm drinks/food.
Getting Lost: Winter conditions can obscure trail markers. Trail can look very different under snow. Carry map, stay on marked trails, don’t venture off if visibility is poor.
Ski Injuries: Devil’s Run and steep sections pose injury risk, especially for inexperienced skiers. Ski within your ability, carry basic first aid, consider skiing with partners.
Emergency Procedures
Cell Service: Cell phone coverage is limited and unreliable throughout the trail system. Do not depend on phone service in emergency situations.
In Case of Emergency:
- Stay calm and assess the situation
- If injured, stabilize condition and seek help if able
- Use whistle (three short blasts = distress signal)
- If lost, stay put – don’t wander
- Warming shelter provides emergency refuge if conditions deteriorate
- Make yourself visible if awaiting rescue
Emergency Contacts:
- Emergency Services: 911 (when service available)
- Vilas County Sheriff: 715-479-4441
- Eagle River Ranger District: 715-479-2827 (business hours)
- Aspirus Eagle River Hospital: 715-479-7411
Wildlife & Nature Safety
Designated Watchable Wildlife Area: Anvil Lake is recognized for excellent wildlife viewing, particularly woodland warblers during migration. However, observe all wildlife from a distance.
Feeding Wildlife: The chickadee feeding experience at the warming shelter is the exception to the rule. Do NOT feed any other wildlife. This includes deer, bears, raccoons, and other animals. Human food habituates wildlife and creates dangerous situations.
Poison Ivy: May be present along trail edges. Learn to identify (“leaves of three, let it be”) and avoid contact. If exposed, wash area with soap and cool water within 30 minutes if possible.
Trail Etiquette & Leave No Trace
Multi-Use Trail Courtesy:
- Yield Right-of-Way: Bikers yield to hikers; everyone yields to horses (though horses are not common on this system)
- One-Way Trails: Respect directional signs – many trails are designed for one-way travel
- Pass Safely: Announce yourself when passing (“on your left”), slow down, give space
- Stay on Trail: Don’t cut switchbacks or create new trails
- Control Pets: Keep dogs on leash at all times, clean up waste, no dogs on groomed ski trails in winter
Pack It In, Pack It Out:
- No trash receptacles on trail – carry out all garbage
- This includes organic waste (banana peels, apple cores, etc.)
- Pick up any litter you find (leave it better than you found it)
- Properly dispose of human waste: if needed, catholes 6-8 inches deep, 200 feet from trail and water
Respect Other Visitors:
- Keep noise levels reasonable – many seek quiet forest experience
- No music without headphones
- Respect private property adjacent to National Forest
- Take only photographs, leave only footprints
Hunting Considerations
Hunting is permitted on National Forest lands during designated seasons (typically September through December for various game). The trail remains open during hunting season. Hikers and bikers should wear blaze orange clothing for visibility. Check Wisconsin DNR website for current hunting season dates before autumn visits.
Year-Round Trail Guide
Spring (April-May)
Trail Conditions: Highly variable and often challenging. Early April typically has snowmelt and muddy conditions. Standing water may be present in low areas. Trails firm up by late May but expect damp conditions. This is the least popular season for trail use.
Highlights: Spring wildflowers emerge in the forest understory. Bird migration is active – excellent time for woodland warbler viewing (the area’s specialty). Forest transitions from brown to vibrant green. Fewer visitors mean solitude for those who don’t mind mud.
What to Bring: Waterproof hiking boots essential, gaiters helpful, trekking poles for balance in mud, extra socks, be prepared to get dirty.
Summer (June-August)
Trail Conditions: Generally good to excellent. Trails are dry and well-maintained. Some sections may remain damp in shaded areas. This is peak season for hiking and mountain biking. Expect to encounter other trail users, though the system rarely feels crowded due to its length and multiple loop options.
Highlights: Full forest canopy provides shade and creates a lush, green environment. The warming shelter chickadees are active and entertaining. Nearby Anvil Lake offers excellent swimming after your hike. Long daylight hours allow extended trail time. Wildflowers present throughout summer.
Challenges: High insect activity, especially deer flies and mosquitoes in July and early August. Afternoon thunderstorms possible. Can be hot and humid. The Ninemile Trail section has reported particularly aggressive deer fly populations.
What to Bring: Extensive bug protection (repellent, head net), plenty of water (no sources on trail), lightweight layers, rain jacket, sunscreen, post-hike swim suit for lake.
Fall (September-October)
Trail Conditions: Excellent. This is arguably the best season for hiking. Trails are dry, temperatures are comfortable, and insects are minimal. October can bring frost and early season snow in some years, but generally remains hikeable through late October.
Highlights: Spectacular fall colors peak late September through early October. The sugar maple-dominated forest puts on a stunning display of oranges, reds, and yellows. Comfortable temperatures (45-65°F) ideal for hiking and biking. Dramatically reduced insect activity. Wildlife preparing for winter is active and visible.
Considerations: Hunting seasons begin in September. Wear blaze orange clothing for visibility. Days are shorter – bring headlamp for insurance. Weather can be variable with possibility of rain or early cold snaps.
What to Bring: Layered clothing system, warm hat and gloves for cool mornings, camera for fall colors, blaze orange vest/hat if hiking during hunting season, headlamp for insurance.
Winter (December-March)
Trail Conditions: Transformed into premier cross-country skiing destination. Trails are groomed regularly for both classic and skate skiing (except Devil’s Run). Grooming quality depends on recent snowfall and grooming schedule – check current conditions before visiting. Snowshoeing permitted on designated trail accessed from Military Road.
Highlights: Peaceful, snow-covered forest creates magical winter landscape. The warming shelter with its fireplace becomes a welcome refuge. Feeding chickadees at the shelter is even more special in winter – they readily land on your hand or head. Excellent cardiovascular workout in beautiful setting. The system connects to Nicolet North Trails for extended skiing (46+ km total).
Trail Details: East and West Trails groomed wide enough for both classic track and skate lane. Most trails are groomed for classic skiing. Devil’s Run is not groomed with tracks, providing more challenging technical downhill runs. Terrain varies from level (East/West) to rolling (Lake Loop, Ninemile) to hilly expert runs (Devil’s Run).
Challenges: Cold temperatures and wind chill. Getting sweaty then cooling down can lead to hypothermia. Limited daylight (sunset around 4:30-5:00 PM in deep winter). Cell service remains limited for emergencies. Dogs are not allowed on groomed ski trails.
What to Bring: Appropriate ski equipment, layered winter clothing, extra gloves, warm drinks in insulated container, high-energy snacks, emergency supplies, birdseed for chickadees (small amount), headlamp if skiing near dusk.
Ski Trail Reports: Current grooming conditions posted at Skinnyski.com – Anvil Trail or call Eagle River Ranger District at 715-479-2827.
Shoulder Seasons
Late March/Early April: Transition period. Snow may still be present but melting. Trails become muddy as snow melts. Not suitable for skiing or hiking – worst time to visit.
November: Can be excellent for hiking if ground is frozen, but unpredictable. May see first significant snowfall. Too early for skiing, potentially unpleasant for hiking. Hunting season continues – wear orange.
❓ Frequently Asked Questions
Yes, absolutely! The East Trail and West Trail sections are beginner-friendly with level terrain suitable for families with children and novice hikers. The complete trail system offers options for all skill levels, clearly marked with difficulty ratings. Families can choose shorter 2-3 mile loops and work up to longer distances. The warming shelter with hand-feeding chickadees is especially popular with children.
The popular 6.6-mile main loop takes approximately 2-3 hours at a moderate pace for most hikers. Faster hikers can complete it in under 2 hours, while those taking time to enjoy wildlife, take photos, or stop at the warming shelter may take 3-4 hours. Mountain bikers typically complete the loop in 1-1.5 hours depending on skill and stops.
Yes, dogs are welcome on leash during hiking and mountain biking seasons. However, dogs are NOT permitted on groomed cross-country ski trails during winter. This protects the groomed tracks for skiers. During summer, be extra vigilant about ticks on your dog and perform thorough checks after the hike. Bring water for your dog as none is available on the trail. Clean up after your pet.
No, there are no water sources on the trail system. You must bring all the water you need for your hike. For the 6.6-mile main loop, carry 1-2 liters per person minimum. On hot summer days, you may want more. The warming shelter does not have water. Nearby Anvil Lake has water but requires treatment/filtration if used. Plan accordingly and don’t underestimate your water needs, especially in summer.
It depends on timing. July and early August can have intense deer fly and mosquito activity, particularly on the Ninemile Trail section. Multiple trail users report aggressive deer flies that can make hiking unpleasant without proper protection. However, early summer (May-June) and fall (September-October) have minimal insect issues. If hiking during peak bug season, bring 25-30% DEET repellent, strongly consider a head net, wear long sleeves/pants if tolerable, and hike midday rather than dawn/dusk. The bugs are manageable with preparation but don’t underestimate them.
Dispersed camping is not permitted at the trailheads or along the trail. However, Anvil Lake Campground is located immediately adjacent to the main trailhead and offers 18 designated campsites with fire rings, picnic tables, vault toilets, and drinking water. Camping fees are $15-20 per night. Reservations are recommended for summer weekends. Contact the Eagle River Ranger District at 715-479-2827 for availability. If camping at Anvil Lake Campground, the trail day-use fee does not apply.
This is one of the trail’s most magical experiences! At the centrally-located warming shelter, black-capped chickadees and red-breasted nuthatches have been habituated to hand-feeding over decades. Bring a small amount of black oil sunflower seeds or unsalted peanuts. Stand near the trees by the shelter with seeds in your outstretched hand, and be patient. The birds will land on your hand (and sometimes your head!) to take seeds. This is especially wonderful in winter. Children absolutely love this experience. Please feed responsibly – small quantities only, appropriate bird food only, don’t feed other wildlife.
Yes, it lives up to its name. Devil’s Run features steep inclines and descents, technical rock and root obstacles, and challenging terrain that demands advanced skills whether hiking, mountain biking, or skiing. It’s not recommended for beginners. Mountain bikers need good bike handling skills and familiarity with technical trail features. Winter skiers require strong technique for steep downhills. Know your limits. The good news is you can easily skip Devil’s Run and still enjoy the entire rest of the trail system at more moderate difficulty levels.
No reservations or pre-registration required for day hiking or mountain biking. Simply pay the $5 day-use fee at the trailhead using the honor system envelopes provided, or display your valid annual pass. Trail is open dawn to dusk year-round (later for cross-country skiing with headlamps). For camping at Anvil Lake Campground, reservations are strongly recommended for summer weekends – call 715-479-2827.
It depends on your preferences! Fall (late September-October) offers spectacular colors, comfortable temperatures, and minimal insects – arguably the best hiking season. Summer (June-August) provides full canopy, long days, and swimming opportunities but has bugs. Winter transforms the trail into excellent skiing. Spring is the least favorable due to mud. If you want the easiest, most comfortable conditions, visit in September or early October.
Essential Resources & Information
Official Management & Information
USDA Forest Service – Anvil Lake
Official trail management agency with current conditions, regulations, and campground information.
Visit USFS Site →Eagle River Ranger District
Local Forest Service office for questions, permits, and trail conditions.
Phone: 715-479-2827
Address: 1247 E. Wall St., Eagle River, WI 54521
Contact Info →Chequamegon-Nicolet National Forest
Main forest website with information about the broader 1.5 million acre National Forest.
Forest Homepage →Recreation.gov – Campground
Make reservations for Anvil Lake Campground sites online.
Book Camping →Trail Maps & Condition Reports
AllTrails – Anvil Lake Trail
User reviews, GPS tracks, photos, and trail conditions from recent hikers.
View AllTrails →Trailforks – Mountain Biking
Mountain bike specific trail information, difficulty ratings, and GPS tracks.
MTB Info →Skinnyski – Winter Ski Reports
Current grooming conditions, trail reports, and winter cross-country skiing information.
Ski Conditions →National Recreation Trails Database
Official NRT designation information and historical trail data.
NRT Info →Local Tourism & Services
Vilas County Tourism
Information about Eagle River area lodging, dining, attractions, and events.
Visit Vilas County →Eagle River Area Chamber
Local chamber of commerce with business listings and area information.
Phone: 715-479-6400
Chamber Info →Northwoods Wisconsin
Regional trail information and Northwoods recreation resources.
Northwoods Guide →Weather & Conditions
Weather Underground – Eagle River
Current weather conditions and detailed forecasts for the trail area.
Check Weather →National Weather Service – Duluth
Official NWS forecasts and weather alerts for northern Wisconsin.
NWS Forecast →Wildlife & Nature
Wisconsin State Natural Areas – Anvil Lake Trail
Natural area designation information and forest ecology details.
Natural Area Info →Wisconsin DNR – Wildlife
Information about Wisconsin wildlife, hunting seasons, and regulations.
WI DNR →Emergency Contacts
- Emergency Services: 911
- Vilas County Sheriff: 715-479-4441
- Eagle River Ranger District: 715-479-2827 (business hours)
- Aspirus Eagle River Hospital: 715-479-7411
- Poison Control: 1-800-222-1222
How We Verify Trail Information
All information in this guide has been verified using multiple authoritative sources to ensure accuracy. We prioritize official government sources and established outdoor recreation platforms. Information is cross-referenced across at least two independent sources before inclusion.
View Complete Source List
Primary Sources:
- USDA Forest Service – Anvil Lake Recreation Area (Official)
- Chequamegon-Nicolet National Forest – Official Site
- National Recreation Trails Application Database (Official NRT Designation)
- Wisconsin DNR – Anvil Lake Trail State Natural Area
Trail Condition & Review Sources:
- AllTrails – Anvil Lake Trail (User Reviews & Conditions)
- Trailforks – Mountain Biking Trail Data
- Skinnyski – Cross-Country Skiing Trail Reports
- Wisconsin Trail Guide – Ski Trail Details
Regional Tourism & Information:
- Vilas County Tourism – Trail Information
- Northwoods Wisconsin – Regional Trail Guide
- Travel Wisconsin – State Tourism Information
Historical & Geographic Data:
- Eagle River, Wisconsin – Geographic and Historical Context
- USDA Forest Service Historical Records – CCC Construction (1930s)
- USGS Topographic Maps – Elevation and Geographic Data
Information last verified: October 2025. Trail conditions, fees, and regulations may change. Always check with the Eagle River Ranger District (715-479-2827) or official USDA Forest Service website for current information before your visit.
Ready to Explore Anvil Lake Trail?
Whether you’re seeking a peaceful forest hike, an exhilarating mountain bike ride, or a winter cross-country skiing adventure, the Anvil Lake National Recreation Trail offers something special in every season. This historic trail system, built by the Civilian Conservation Corps and designated as a National Recreation Trail, provides a perfect escape into Wisconsin’s beautiful Northwoods.
- Check current trail conditions before you go
- Prepare for weather and seasonal challenges (especially bugs in summer!)
- Bring appropriate gear and plenty of water
- Respect the trail and practice Leave No Trace principles
- Bring birdseed for the chickadees at the warming shelter
- Consider combining your trail visit with camping at Anvil Lake Campground
The Anvil Lake trail system has been welcoming visitors for nearly a century, and it continues to provide outstanding year-round recreation opportunities. From the hand-feeding chickadees at the warming shelter to the challenging terrain of Devil’s Run, from autumn’s spectacular colors to winter’s groomed ski tracks, this trail creates lasting memories for outdoor enthusiasts of all ages and abilities.