Open Canyon Trail

Overview

Open Canyon is one of the Tetons’ quieter big canyons—classic U‑shaped walls, shady forest, wildflower meadows, and a stout grind to panoramic views near Mount Hunt Divide. The named trail runs from the Valley Trail up Open Canyon to the divide and on to connect with the Granite Canyon corridor. Expect a serious day: the canyon’s full push is very strenuous with significant elevation gain and true backcountry feel.

Distance and ways to hike it

As a long day hike, many hikers use Open Canyon as the backbone to reach Marion Lake and return the same way—about 27.5 miles total (this includes the connection into Granite Canyon). If you’re focused on the canyon itself, the core section up to Mount Hunt Divide is roughly 8.3 miles one way (plan on very roughly 16–17 miles round‑trip), with approximately 3,440–4,200 feet of cumulative gain depending on where you start and how far you go. It’s out‑and‑back from the east side or a point‑to‑point if you link to Granite Canyon.

What you’ll see

You’ll start in cool, dense conifers with frequent creek sounds and occasional crossings, then break into open meadows with broadening views back toward Phelps Lake. Higher up, the canyon’s glacial carving really shows—steep walls, a classic U‑shaped profile, and big mountain vistas as you near Mount Hunt Divide. Wildflowers pop in early summer, and wildlife ranges from moose to marmots, with black bears a real possibility.

Crowd factor and camping

Compared with marquee canyons like Cascade or Death, Open Canyon sees far fewer boots. That solitude is the draw—just know you’re on your own more often than not. There are designated camping zones in the canyon (permit required) if you’d rather split the effort over two days or build a bigger loop.

Best time to hike

Late June through August is the sweet spot: higher snow has melted, flowers are in, and days are long. Early fall can be fantastic for cooler air and color, but be ready for early season snow and cold. Start early for shade on the climb and to dodge typical afternoon thunderstorms.

Know before you go

• Access is indirect: you’ll reach the Open Canyon junction from the Valley Trail near the White Grass Ranger Station Historic District, typically approached from the Death Canyon or Phelps Lake trailheads (about 3 miles of approach before you’re truly in Open Canyon).
• This is prime bear country—carry bear spray and know how to use it; store food properly if camping.
• Water is available from streams, but always filter or treat.
• Off‑trail side trips (like to Indian or Coyote Lakes or Mount Hunt) require solid navigation skills—don’t dabble unless you’re prepared.
• Winter travel here is not recommended for most due to deep snow and avalanche hazard.