About
Length (round trip)9 mi
ShapeOut-and-Back
DifficultyStrenuous
Elevation gain2,300 ft up
Typical time5 hr 45 min
TrailheadLupine Meadows trailhead
SurfaceMaintained trail then an unmarked boulder field
Best seasonJuly to September. Canyon trails hold snow into July and high passes into August.
DogsNot allowed
What you'll see ⛰️ Summit🌄 Big views🏞️ Lake

Delta Lake is not an official park trail. A social path leaves the Amphitheater Lakes switchbacks and climbs through a boulder field to a glacially fed lake of startling turquoise, directly beneath the east face of the Grand Teton.

Tips
Unsigned, unmaintained and steep, with a genuine boulder scramble near the top - the park does not maintain or recommend it. Its popularity has badly eroded the route, so stay on the main path and do not cut switchbacks.
🎒 What to pack

A 9 mi walk — here's the short list worth having in the pack.

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Trail data: USGS National Map / PAD-US, the National Park Service, state agencies, and © OpenStreetMap contributors (ODbL). Access and conditions change — check with the managing agency before you go.