Avalanche Peak Trail

Two hikers enjoying the view of mountains in the distance from the summit of rocky mountain.

Avalanche Peak is a straight-up lung-buster: 2,100 feet of elevation gain in just over 2 miles of relentless switchbacks and talus slopes leading to an exposed alpine ridgeline at 10,500+ feet. The payoff is unquestionable—summit views of Yellowstone's tallest and most remote peaks. But this is not a casual stroll; the grade is steep, the air is thin, and the descent will test your quads. Only for strong hikers comfortable with exposure.

Quick facts

Distance Miles: 10
Route Type: Out-and-back
Difficulty Level: Strenuous
Elevation Gain Feet: 2100

Trail profile

Distance Miles: 10
Route Type: Out-and-back
Difficulty Level: Strenuous
Elevation Gain Feet: 2100
Estimated Time: 3-4 hours if you're fit and acclimated; 5+ hours if you struggle with altitude or take time at the summit.
Trail Surface: Rocky, loose talus, steep switchbacks, bare ground. Expect scree above treeline.
Trail Features: Alpine ridgeline with exposed drop-offs
Talus slopes and rocky terrain
Switchback ascent through forested lower section
Views of remote alpine peaks
Stark, treeless summit plateau
Trail Highlights: 360-degree alpine summit views of Yellowstone's tallest and most remote peaks from an exposed 10,500+ foot ridgeline. This is raw, high-altitude mountain scenery.

Trailhead & access

Trailhead Location: Eleanor Lake pullout, 19 miles (30.6 km) east of Fishing Bridge Junction or 8 miles (12.9 km) west of the East Entrance.
Parking Lot Size: Small pullout; capacity unknown.
Parking Fill Time: Full by mid-morning on summer weekends; early arrival essential.
Shuttle Required: 0
Shuttle Details: No shuttle available. Private vehicle required.

Permits & conditions

Permit Details: Day hiking does not require permits in Yellowstone.
Fees: $35 — Entrance - Private Vehicle (valid 7 days)
Trail Status: Typically open late July through August; closed by snow and not recommended Sept-Oct.
Seasonal Closures: Trail closed by snow typically until early July. Hiking not recommended September through October due to grizzly bears seeking whitebark pine nuts in the area.

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: No reliable water sources on trail. Carry all water—minimum 3 liters. Alpine water is nonexistent above treeline.
Accessibility: Rooty, rocky, steeply graded switchbacks ascending 2,100 feet. Talus and scree slopes are unstable. Exposed ridgeline with narrow trail and drop-offs. Not accessible for mobility devices or those with cardiac/respiratory issues.

Safety & strategy

Hazards: Lightning above treeline
Exposure and drop-offs on ridgeline
Thin air and altitude sickness risk
Loose talus and unstable terrain
Grizzly bears (seasonal Sept-Oct)
Snow and ice (early season)
Sudden weather changes
Hazard Details: Lightning is the primary threat above treeline—do not linger if storms approach. The ridgeline crossing is exposed with real drop-offs; steady footing required. Altitude (10,500+ feet) can trigger sickness in unacclimated hikers. Talus is loose and can shift. Grizzly bears frequent this area September-October seeking whitebark pine nuts; avoid those months. Snow remains through late June.
Cell Service: No cell service; assume offline.
Crowd Level: Moderate to light; the remoteness and difficulty keep casual hikers away.
Peak Crowd Times: Summer weekends, particularly July-August mid-day.
Best Season: Late July through August
Best Time To Visit: July through August, after snowmelt (typically early July) and before grizzly season (Sept-Oct). Start before 6 AM to avoid afternoon thunderstorms and heat; begin when light is strong.
Tips Advice: Carry 3L of water minimum—the alpine section offers zero water sources.
Tighten your boots: talus is unforgiving.
Trekking poles will save your knees on the descent.
Make noise ascending—bear country.
Bring rain gear and layers; temperature drops ~30°F at elevation.
Leave no trace at the summit—stay on established trails through talus.
Turn back if thunderstorms approach; above treeline you're a lightning rod.

More details

Park Area: Yellowstone Lake Area
Trail Markers: Generally well-established but exposed; the talus and ridgeline section is marked but requires careful navigation. Blaze visibility can be limited.
Dogs Allowed: false
Biking Allowed: false
Shade Level: Fully exposed above treeline; initial forest section offers partial shade but most of the hike is sun-blasted alpine.
Emergency Contacts: Call 911. Fishing Bridge Ranger Station (19 miles west) is the nearest ranger facility.
Map Recommended: 1
Snow Dates: Trail typically snow-covered until early July; possible snow through late June in some years.
Mud Season: Minimal; alpine trails dry quickly after snowmelt.
Bug Season: Light above treeline due to elevation; possible mosquitoes in forested lower sections during July-August.
Insider Tips: The false summit at 1.5 miles may tempt you to turn back—don't. The real payoff is another mile beyond.
Descend slowly: the talus on the way down is treacherous on tired legs.
The ridgeline crossing is brief but exposed—plant each foot with intention.
Start hydration early; by mile 2 you'll feel the altitude.
If you encounter bears, back away slowly and make noise.
Recent Updates: No recent trail changes documented.
Family Friendly Notes: Not suitable for young children or those with heart/respiratory problems. The steep grades, altitude, and exposed ridgeline crossing demand strong fitness and sure footing. Supervise any child attempt very closely.
Nearby Facilities: Fishing Bridge area (19 miles west) offers ranger station, lodging, gas, and supplies. Eleanor Lake pullout has minimal facilities.
Review Summary: Hikers consistently report the ascent as brutally steep but the alpine summit views make every vertical foot worthwhile. This trail separates the serious hikers from the casual day-trippers. The descent is as challenging as the ascent—tread carefully.

Frequently asked questions

Are there grizzly bears on this trail?

Yes. Grizzlies frequent this area, especially in fall seeking whitebark pine nuts. Hiking is not recommended September-October. During the open season (July-August), hike early, make noise, and carry bear spray if comfortable.

Can I do this trail if I'm not super fit?

Honestly, no. This is a strenuous hike with 2,100 feet of steep elevation gain. You need solid hiking fitness and leg strength. If you're new to hiking, train on easier trails first.

What if I get altitude sickness at 10,500 feet?

Possible but rare at this elevation. If you feel dizzy, nauseous, or short of breath, descend immediately and drink water. Acclimatize gradually—don't rush the ascent.

Is it safe to hike alone?

No cell service and remote location make solo hiking risky. Hike with a partner if possible. If alone, tell someone your plan and expected return time.

Do I need trekking poles?

Highly recommended, especially for descent. They'll protect your knees on the rocky, steep terrain and provide stability on talus.

Can I bring my dog?

No. Dogs are not permitted on Yellowstone trails.