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

This is a strenuous 3-mile ridge hike that climbs to a fully exposed crest with magnificent views of Slough Creek Valley and the Absaroka Range. Altitude and exposure are the real killers—not distance. Most hikers report 2-4 hours roundtrip, but the high elevation (7000+ feet) and sustained climb test your cardiovascular system hard. The payoff is a 360-degree panorama and access to an overlook of historic Petrified Trees, but only if you stay on the main trail and navigate past misleading wildlife tracks.
Strenuous—a lung-buster from altitude and grade. Not for casual hikers.
A high-altitude ridge walk with sweeping views of Slough Creek Valley to the north and the Absaroka Range. The real prize is the vantage point overlooking the Petrified Trees at the cliff outcrop—a rare geological feature visible from the ridge.
• Don't stop at the first open ridge—it looks like a summit but it's a false crest. Keep pushing southwest along the ridge line. • The cliff outcrop with the Petrified Trees sits at the 2 o'clock position when viewed from the pullout. Use it as your navigation anchor while climbing. • Descend before 3 PM to avoid afternoon thunderstorms that form over the ridge. • The wildlife trails that cut below the ridge are traps—they veer into dense forest and dead-end. Stay on the high ground. • If you feel nauseous or dizzy, descend immediately. Don't "push through" altitude sickness.
Summer and Fall (June through October). Most park roads open mid-April; some routes close in winter.
Not suitable for young children. The altitude, exposure, and cliff edges create serious risks. Older kids (10+) with solid hiking experience and full acclimatization might manage with constant adult supervision. Not recommended for families unfamiliar with altitude.
Hikers report the altitude and exposure—not the distance—are the real test. Those who acclimatize and stay focused praise the ridge views as world-class. Most complaints center on getting sidetracked by wildlife trails and underestimating the altitude's physical toll. Few regret the effort once at the crest.
No permits or reservations required for day hiking.
Not applicable. Direct trailhead access via personal vehicle only.
High elevation (7000+ feet) triggers altitude sickness in unaccustomed hikers—dizziness, shortness of breath, nausea. The fully exposed ridge top has no shelter from sun, wind, or lightning. Cliff edges near the petrified tree outcrop are real drop-offs. Multiple wildlife trails branch off the main path, causing hikers to get lost. Afternoon thunderstorms roll in fast. Bears inhabit the area.
Not accessible. Steep, rooty dirt and rocky terrain with exposed edges. High elevation makes it unsuitable for mobility aids or people with altitude sensitivity.
Not suitable for young children. The altitude, exposure, and cliff edges create serious risks. Older kids (10+) with solid hiking experience and full acclimatization might manage with constant adult supervision. Not recommended for families unfamiliar with altitude.
Tower Junction (4.5 miles west) has a ranger station, store, and basic services. No facilities at the trailhead itself.
Hikers report the altitude and exposure—not the distance—are the real test. Those who acclimatize and stay focused praise the ridge views as world-class. Most complaints center on getting sidetracked by wildlife trails and underestimating the altitude's physical toll. Few regret the effort once at the crest.
" Hikers report the altitude and exposure—not the distance—are the real test. Those who acclimatize and stay focused praise the ridge views as world-class. Most complaints center on getting sidetracked by wildlife trails and underestimating the altitude's physical toll. Few regret the effort once at the crest."
Fitness helps, but altitude is the limiter. The 3-mile distance is short, but the high elevation and steep climb will humble you. Start very slow, take frequent breaks, and be honest about turning back if you feel dizzy or severely short of breath. Altitude sickness doesn't care about your gym routine.
Yes. Make noise constantly—talk, clap, use a whistle. Assume bears are present. Carry bear spray if you have it. Never hike alone if possible. If you see a bear, back away slowly and speak in a calm voice.
It's well-worn at first, but becomes confusing near the ridge top. Multiple wildlife trails branch off and create dead-ends. Stay on the most obvious, highest path. Bring a map and don't follow animal tracks.
Altitude sickness. The high elevation (7000+ feet) causes dizziness, nausea, and shortness of breath in unaccustomed hikers. Dehydration is your second killer—the exposed ridge has zero water and full sun exposure. Bring 2-3 liters and descend if symptoms worsen.
Yes, but understand the risks. If you get injured on the exposed ridge far from the road, rescue will take time. Tell someone your route and expected return time. Carry a fully charged phone (cell service is spotty). Consider a whistle and basic first aid.
The official distance is 3 miles roundtrip, but most hikers take 3-4 hours due to elevation and navigation complexity. If you're unaccustomed to altitude, add another 1-2 hours. Start early and give yourself plenty of daylight margin.
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