Caribou Lake Trail

Caribou Lake Trail is a long-distance hiking route in the Trinity Alps Wilderness near Forks of Salmon / Big Flat Campground, California. It follows foot travel only (horses are also permitted) along a ground surface path mapped as the named route “Caribou Lake Trail” (ref 5455).

This route is typically run as a demanding, remote backpacking itinerary aimed at reaching the Caribou Lakes basin (including Snowslide Lake and Lower/Upper Caribou Lake). The route is rugged and strenuous, with sustained climbing through high-country terrain.

A common way to do the trek is as a loop using the Old Caribou Trail and the main Caribou Lakes Trail, with distances reported around ~12.8 miles round-trip via the Old Caribou Trail or up to about 19.9 miles on the main Caribou Lakes Trail. Expect roughly a full-day to overnight schedule—often around 9 to 11 hours for the longer day-hike style effort.

The route passes Caribou Meadows and uses segments that include switchbacks and granite slab terrain as you climb toward the lakes. Water isn’t consistent everywhere, so plan around limited sources and carry what you need between known stops.

Backcountry camping is a key part of the experience, with wilderness-permit requirements for overnight use. Pets are allowed but must be on a leash while in the wilderness.

Fire history affects how you prepare: portions of the route go through a previous burn scar, so bring extra sun protection and water accordingly. The trail’s remoteness also means you should be ready for long mileage and long time-on-trail if you’re moving through to the lakes and back.

More information: Caribou Lakes Trail | Hike Mt. Shasta, Explore the Caribou Lakes Trail | Trinity Alps Wilderness, Caribou Lake Trail