Fuller Lakes

The feel

The trailhead starts with a steep stairway, then the trail levels off gradually in mixed white spruce forest with mountain hemlock. It climbs 1,400 feet past wet, brushy creek bottoms with cow parsnip and devil's club to Lower Fuller Lake, with little gain between the lower and upper lakes.

Cross-country travel is relatively easy around Upper Fuller Lake, and a nearby ridge gives spectacular views. Some of the mountain hemlocks near tree line there sprouted in the 1500s.

What to expect

Route and terrain

Out and back, 1,400 feet of climbing in all. The trail passes through the 2019 Swan Lake Fire area beyond the lower lake. Several stretches may be wet or muddy, especially between the lower and upper lakes.

Time

3.5 to 4 hours.

Parking

The trailhead is on the north side of the Sterling Highway at milepost 57.

Dogs

Dogs are welcome and may be off-leash in some areas.

Hazards

Black and brown bears traverse the trail and may be seen at any time. Cow parsnip oil can cause burn-like skin blisters in sunlight.

Season and access

May through September.

Mingo says

Go from May through September. Watch the mountainsides for Dall sheep, and look for Arctic grayling in Lower Fuller Lake.

Before you go

• Wear long sleeves and pants in late summer to keep clear of the cow parsnip.
• Bring a rod; fishing is possible in both lakes.
• Stay bear aware; bears use the trail at any time.

Written October 2026. Sources are listed at the end of this page.