TrailAvalanche Peak Trailhead 5N2
4.5-mile out-and-back; 2,100 ft gain. Relentless climb with a true summit payoff.

The Chittenden Loop Ski Trail is a 5.3-mile winter ski loop in Yellowstone's Tower Area, designed for advanced skiers only. Steep terrain and exposed ridge sections demand technical skill and fitness; the trail ranges from easier forest navigation to challenging descents that can accelerate with packed snow. Mount Washburn views reward clear-day efforts, but wildlife hazards (bison, elk, bears, wolves) and cold exposure at elevation test your judgment and conditioning. Plan 4–5 hours of intense skiing through lodgepole pine with potential whiteout risk—not for recreationalists.
Advanced. Steep terrain with exposed sections. Not for beginners.
Mount Washburn vista on clear days. Transition from dense forest to open ridge offers dramatic views of the Absaroka Range.
• Start right through Tower Fall Campground to do the easier section first—climb the steep part early while fresh. Clockwise = easier route. • Advanced skiers may prefer counterclockwise (steeper first) if snow is soft; fast descents reward firm snow. • The unplowed Tower-Canyon road return is deceptively long (~3 miles)—pace yourself for the home stretch. • Mount Washburn views appear at the ridge transition; don't expect summit access (that's the Chittenden Road–Mount Washburn Trail). • Bison and elk bed down in meadows along the route—give them space and make noise. Watch for them before descending into clearings. • False flat sections lull you into thinking the trail continues when it turns steep—stay alert. • Skiing the loop in moderate temps = sticky snow, extra effort, reduced speed control. Cold mornings = fast skating; warm afternoons = mushy nightmare.
December through early April, weather-dependent. Peak conditions typically mid-January to early March.
Not suitable for families with children unless they are advanced, experienced skiers. Steep terrain, wildlife hazards (bison, bears), and cold exposure at altitude create serious danger. Adult hand-holding doesn't prevent an avalanche or a bear encounter. Recommend minimum age 14+ with expert skiing ability and adult supervision.
Experienced skiers report this loop is physically and technically demanding, especially steep sections that require precise descent control. Mount Washburn views reward the effort on clear days, but weather and snow conditions dictate the experience. Wildlife encounters are common—respect distance buffers. Fitness and winter skillset are non-negotiable.
No permits required. Reservation not required.
Not required. Your own transportation to Tower Fall; winter shuttle services available from Mammoth/Gardner.
Bison and elk frequent this trail—federal regulation requires 25-yard buffer. Bears and wolves require 100-yard distance. Steep terrain, especially in the 'more difficult' section, has avalanche risk; soft snow consolidation in March–April raises slide probability. Exposed ridge sections at ~9,000 ft elevation create wind chill risk and rapid weather changes. Cold, dry air causes dehydration even when you don't feel thirsty. Whiteout conditions in storms reduce visibility to near-zero; navigation becomes map-and-compass only. Poor snow packing after warm days = wet slides; solid pack after cold nights = dangerous high-speed descents.
Advanced skiing required. Not accessible for beginner or intermediate skiers. Service dogs permitted but must be leashed. Trail difficulty increases significantly in poor snow conditions or high winds.
Not suitable for families with children unless they are advanced, experienced skiers. Steep terrain, wildlife hazards (bison, bears), and cold exposure at altitude create serious danger. Adult hand-holding doesn't prevent an avalanche or a bear encounter. Recommend minimum age 14+ with expert skiing ability and adult supervision.
Tower Fall Campground (closed in winter). Nearest winter services: Mammoth Hot Springs, ~21 miles north. Limited services in winter; plan accordingly.
Experienced skiers report this loop is physically and technically demanding, especially steep sections that require precise descent control. Mount Washburn views reward the effort on clear days, but weather and snow conditions dictate the experience. Wildlife encounters are common—respect distance buffers. Fitness and winter skillset are non-negotiable.
" Experienced skiers report this loop is physically and technically demanding, especially steep sections that require precise descent control. Mount Washburn views reward the effort on clear days, but weather and snow conditions dictate the experience. Wildlife encounters are common—respect distance buffers. Fitness and winter skillset are non-negotiable."
Absolutely not. The NPS explicitly rates this 'advanced skiers only' due to steep terrain. One mistake on a slope like this = injury or worse. Train on easier slopes first; come back when you can handle mogul runs and icy steeps.
Very likely. Bison and elk frequent this trail year-round, even in winter. Bears can be active in late winter during warm spells. You WILL encounter wildlife. Bring bear spray, know how to use it, and maintain 100-yard distance from bears/wolves, 25 yards from bison/elk. Make noise; do not surprise them.
Tower Fall starts around 6,000 feet; the ridge sections reach ~9,000 feet. Most people feel thin air on the climbs. Acclimatize the day before (sleep in the park). Drink extra water despite cold—altitude dehydration is real, especially in dry winter air. Headache, nausea, or dizziness = signs of altitude sickness; descend and rest.
Avalanche beacon, probe, and shovel (check avalanche forecast first; if danger is low, you may skip these, but carry them if moderate or higher). Layers (not cotton—wool or synthetic only), goggles for wind, sunscreen (UV reflects off snow), sunglasses, and a headlamp for early starts. Trekking poles help on descents. Carry 2–3L water. A map and compass are mandatory backups to GPS.
Visibility drops to zero. Whiteout conditions make navigation impossible—you're trusting your map/compass or skier tracks that are buried. If a storm approaches, descend immediately to lower elevation or stop and wait for clarity. No summit, no view, no turns are worth getting lost in a whiteout. Turn back early; ego kills.
If you can handle mogul runs, icy blacks, and ski ungroomed terrain confidently, you have the technical base. The hard part is fitness and remoteness. This trail is 5+ miles and 4–5 hours of non-stop effort with no bailout. If you're not regularly skiing challenging terrain, you'll be shattered by mile 3. Honestly assess your fitness before you commit.
No. Cell service is unreliable to non-existent in this remote area. Carry a satellite communicator (inReach, Garmin) or file a trip plan with someone on the outside: route, start time, expected return. If you disappear, someone knows where to tell rescuers to look.
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