Eiffel Lake Tr

Why go

If you want Moraine Lake’s big-mountain drama without the Sentinel Pass crowds, Eiffel Lake delivers. You’ll climb the shared switchbacks toward Larch Valley, then peel off onto a quieter, gently graded traverse with nonstop views across the Valley of the Ten Peaks to a serene alpine lake.

The experience

From just past Moraine Lake Lodge, tackle the steepest work in the first 30–45 minutes. At the signed junction, turn left for Eiffel Lake—the trail eases off immediately. From here, expect packed dirt with rocky and rooty stretches, plus some scree after the split. Views of the Ten Peaks open up early and keep getting better as you contour above Moraine Lake toward a turquoise bowl tucked beneath rugged slopes.

Wildflower meadows light up midsummer; in fall, golden larches glow here with fewer people than Larch Valley. Near the lake, watch and listen for pikas, marmots, and ground squirrels working the talus. Many hikers wander a bit along the slope above the lake for broader vistas; an optional extension continues beyond on the Wenkchemna Pass route if you’ve got extra time and legs.

Stats and difficulty

Plan on about 11–12 km (7.1 mi) total, out-and-back, with roughly 400–600 m of cumulative gain. Moderate overall: a stout opening climb, then a mostly mellow traverse to the lake. Expect 3.5–6 hours round trip depending on pace and photo stops.

Best time to hike

Late June through early October is the sweet spot. Snow can linger early season; late September to early October is prime for larches with thinner crowds than Larch Valley. Crowds are heaviest on the shared switchbacks, but traffic drops sharply once you take the Eiffel Lake turn.

Logistics and tips

• Access to Moraine Lake is shuttle/transit/guided-tour only; book your spot in advance. Facilities are at Moraine Lake, not on the trail.
• This is prime grizzly country—carry accessible bear spray and consider hiking in a group. Seasonal group-of-four rules can be enacted.
• Footing is uneven in places (roots, rocks, some scree). Pack layers and rain gear—weather turns fast in the high country.
• Dogs must be leashed; some shuttles may not allow pets, so plan transport accordingly.