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

Bike 3 miles straight uphill on a steep gravel road to the 10,243-foot summit of Mount Washburn. You'll gain 1,500 feet of elevation in 2.5 miles—a relentless, no-mercy climb. The payoff: 360-degree views across Yellowstone and a real sense of accomplishment. This is bear country, so pack spray and stay alert.
Strenuous lung-buster
The 360-degree views from the 10,243-foot summit dominate. On clear days you see across the entire park. The sense of accomplishment after the brutal climb is real.
• The false summit at mile 2 will trick you—keep pedaling to reach the true summit. • Sunrise at the summit requires a very early start. • The descent is steeper and scarier than the ascent—save energy for your brakes and legs. • Carry bear spray on your hip belt, not in a backpack. • Grizzlies are most active at dawn and dusk—ride midday if nervous. • Service vehicles don't stop for bikes—yield the road. • The summit wind can be severe—summit views on calm mornings are clearer.
Summer (mid-June through early September)
Not recommended for young children or families with weak cyclists. Steep grade, high altitude, full sun, and wildlife hazards make this a tough ride. Teenagers and fit adults only. Hand-holding on steep sections essential if young riders insist on attempting.
Bikers praise the summit views and sense of achievement, but consistently warn about the brutal elevation gain and relentless climb. Most riders need 3–5 hours round trip. Descent requires caution and trekking poles. Weather at the summit can shift rapidly.
No permit required. Day use only.
No shuttle required or available
Federal law requires 100 yards from bears and wolves. Watch for grizzlies—they forage in this area, especially evening. Stay 25 yards from bison. Service vehicles use this road without warning. Altitude (10,243 ft) can cause headaches or nausea. Descent is steep and hard on knees—trekking poles essential. No shade—sun exposure is relentless.
Very steep climb with 1,500 ft gain. Wide gravel surface accommodates hand-cycles, but the elevation gain is extreme and unsuitable for most users with mobility challenges.
Not recommended for young children or families with weak cyclists. Steep grade, high altitude, full sun, and wildlife hazards make this a tough ride. Teenagers and fit adults only. Hand-holding on steep sections essential if young riders insist on attempting.
Bikers praise the summit views and sense of achievement, but consistently warn about the brutal elevation gain and relentless climb. Most riders need 3–5 hours round trip. Descent requires caution and trekking poles. Weather at the summit can shift rapidly.
" Bikers praise the summit views and sense of achievement, but consistently warn about the brutal elevation gain and relentless climb. Most riders need 3–5 hours round trip. Descent requires caution and trekking poles. Weather at the summit can shift rapidly."
You need solid fitness. If you can sustain climbing hills for 1–2 hours, you can reach the summit, though slower riders may take 4–5 hours. The grit matters more than speed.
Bear encounters are possible but rare if you make noise and ride midday. Carry bear spray, keep it accessible, and know how to use it. Stay 100 yards away if you spot one.
Yes, but the descent is steep and technically harder on your knees and brakes. Use trekking poles, control your speed, and don't ride faster than you can brake.
Pace yourself on the ascent and save energy for the descent. Rest at the summit. If you're genuinely exhausted, a ranger can advise on support options, but this ride is self-reliant.
No. There's nothing on the trail. Carry all water (minimum 2.5–3 liters) and use facilities before you depart.
Yield the road. Pull to the side and let them pass. They don't stop for bikes—assume they won't see you until the last second.
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