Alaska Basin-Buck Mountain Pass Trail

Overview

This is a high-alpine, hard-earned route that links the Death Canyon side of the Tetons to the Alaska Basin and the airy saddle of Buck Mountain Pass (about 10,480 feet). From the Death Canyon Trailhead, plan roughly 9.25 miles one way to reach Buck Mountain Pass—distances vary depending on where you turn around or if you continue into the basin or along the Teton Crest. Expect a long, strenuous day or make it part of a backpacking itinerary.

What You’ll See

The payoff is classic Teton high country: a glacially carved basin dotted with sparkling alpine lakes and wildflower meadows framed by dramatic cliffs. Mirror Lake is a showstopper for reflections with Buck Mountain looming above. From the pass, you’ll get wide-open, panoramic views across the range and into surrounding wilderness. Keep an eye (and ear) out for marmots and pikas among the rocks, and watch for moose in the lower approaches.

Trail Character

The approach is sustained and steep, culminating in tight, gravelly switchbacks and stretches of loose boulders near the pass. You’ll encounter small creek crossings and rocky tread above treeline. The basin holds a web of intersecting paths—carry a good map for junctions and any lingering snow. Once on the crest, you can tag nearby photo-worthy spots: head about 1.5 miles north for Sunset Lake or go south from Fox Creek Pass for Marion Lake.

Best Time to Hike

July through September is prime. Snow often lingers into early July on the pass, wildflowers peak mid-summer, and lakes are typically ice-free. Early fall brings crisp air and fewer people, but nights get cold and early snow is possible. Even in summer, plan for chilly nights and fast-changing mountain weather.

Camping and Regulations

Day hiking requires no permit. If you camp within Grand Teton National Park, you’ll need a backcountry permit and must follow zone rules. Cross west into Alaska Basin (National Forest land) and you can disperse camp without a permit—at least 200 feet from lakes—and fires are not allowed. Bear country rules apply everywhere: carry bear spray and store food properly (a canister is smart).

Tips

• Water: There’s no treated water—filter from creeks or lakes only. Restrooms are available at the trailhead.
• Navigation: Multiple junctions in the basin and occasional snow patches make a proper map (and the skill to use it) essential.
• Expect company from backpackers and equestrians; the final climb is strenuous for both.

Is It For You?

If you want big alpine scenery, wildflowers, and a real workout with flexible camping options just across the park boundary, this route delivers. If you’re after something gentler with similar views, consider shorter crest-side detours once you’ve reached the divide, like Sunset or Marion Lakes, rather than pushing all the way to the pass and back in a day.