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

This 6.2-mile round-trip is a legitimate test of grit: steep descent to the Yellowstone River's suspension bridge, exposed sagebrush plateau crossing, then drop to Hellroaring Creek. Moderately strenuous means real lungs and legs challenge with relentless sun exposure and zero shade on the plateau section. The payoff is solitude, river gorge views, and terrain that separates tourists from hikers.
Moderately Strenuous Lung-Buster
The suspension bridge crossing is the centerpiece: psychologically intense, structurally sound, framing dramatic river gorge. Plateau crossing offers panoramic Northern Range views and solitude. Hellroaring Creek confluence provides water access and quiet spot for lunch or fishing.
• The suspension bridge creaks and sways—completely normal. Don't stop on it; step confidently and keep moving. • Water at Hellroaring Creek must be filtered before drinking; popular fishing area. • Early morning hikers often spot elk, bison, or wolves on the plateau. • The return climb is deceptively hard; many underestimate the energy needed ascending the plateau after the creek section. Backcountry trails branch off beyond Hellroaring Creek—not part of standard day hike; stay on marked trail. • The plateau section can feel psychologically taxing due to exposure and heat; have mental prep for that.
Summer and early fall (June-September). Most park roads open mid-April; trail is snow-free by June. Season closes mid-November due to snow.
Not recommended for young children. Suspension bridge crossing demands comfort with exposure; children must have strong hiking experience and steady legs. Steep sections require hand-holding. No shade or water nearby—families need discipline about hydration breaks and pacing. Older kids (12+) with hiking experience can succeed with close supervision.
Hikers consistently report this is a genuine lung-and-leg buster with the suspension bridge and plateau exposure testing both fitness and nerve. The solitude is a major draw—far fewer crowds than geyser trails. However, dehydration, sun exposure, and the psychological challenge of the bridge are real hazards. Those disciplined about water and fit enough for sustained elevation find it deeply rewarding.
Day hiking permitted without permits or reservations. No backcountry overnight allowed—day hike only to Hellroaring Creek confluence.
No shuttle available. Drive own vehicle to trailhead lot. Dirt road adds 10 minutes from Tower Junction.
Descent to bridge is steep with loose rock—fall risk is real for inattentive hikers. Suspension bridge sways and is psychologically intense but structurally sound; crossing requires commitment. Plateau is exposed scrubland with zero shade and intense solar radiation—dehydration and heat exhaustion are primary hazards. This is active bear country; make continuous noise. Creek crossings can be challenging in high water (spring). NPS warns of confusing trail junctions beyond bridge; stay focused on Hellroaring Trail markers.
Not accessible. Rooty, steep descent with uneven, rocky terrain. Requires strong leg and balance stability.
Not recommended for young children. Suspension bridge crossing demands comfort with exposure; children must have strong hiking experience and steady legs. Steep sections require hand-holding. No shade or water nearby—families need discipline about hydration breaks and pacing. Older kids (12+) with hiking experience can succeed with close supervision.
Tower Fall Campground (~5 miles away). Mammoth District Ranger Station (~30 miles). No services at trailhead itself.
Hikers consistently report this is a genuine lung-and-leg buster with the suspension bridge and plateau exposure testing both fitness and nerve. The solitude is a major draw—far fewer crowds than geyser trails. However, dehydration, sun exposure, and the psychological challenge of the bridge are real hazards. Those disciplined about water and fit enough for sustained elevation find it deeply rewarding.
" Hikers consistently report this is a genuine lung-and-leg buster with the suspension bridge and plateau exposure testing both fitness and nerve. The solitude is a major draw—far fewer crowds than geyser trails. However, dehydration, sun exposure, and the psychological challenge of the bridge are real hazards. Those disciplined about water and fit enough for sustained elevation find it deeply rewarding."
It's structurally sound and safe, but psychologically intense if you're uncomfortable with heights or exposure. It sways a bit—completely normal and designed for that movement. Don't linger; step confidently and keep moving. Most hikers report it's the mental crux, not a physical hazard.
Yes, but with respect. This is bear country—make continuous noise (talk, sing, use bear bells). Carry a communication device if possible. Tell someone your itinerary. Solo hikers report isolation kicking in mid-trail; be mentally prepared for that silence.
Highly likely. This is the Northern Range—elk, bison, wolves, and bears live here. Make noise constantly. If you encounter a bear, don't run; back away slowly and calmly. Respect distance (100+ yards from bears).
Minimum 2 liters, ideally 3. The plateau has zero shade and intense sun. No water source until Hellroaring Creek at 3.1 miles in. Dehydration is the #1 reason hikers struggle. Bring more than you think; many underestimate this trail's water demands.
Trail junctions beyond the bridge confuse hikers regularly. NPS warns about this explicitly. If unsure at a junction, backtrack to a marked spot. Your turnaround point is Hellroaring Creek confluence—don't push beyond it on a day hike. Carry a map.
Moderate crowds mid-day in July-August, far fewer than Old Faithful or Grand Canyon trails. Start by 7am and you'll have plateau solitude. Afternoon arrivals will see other hikers on the return.
The plateau offers zero shelter. Descend to the river area where trees provide some cover. Afternoon thunderstorms are common in summer; if you see them forming, turn back immediately. Electrical storms are dangerous on exposed terrain.
6 listings
4 listings
Information is compiled from official sources, verified traveler reviews, and editorial research. Learn how YourNPGuide works →
Notifications