Wynoochee Lake Shore Trail #878

Wynoochee Lake Shore Trail #878 is a 16-mile loop in the southern Olympic National Forest, built around Wynoochee Lake with sections in both old-growth and second-growth forest. The route follows the lakeshore for about 6 miles, then extends about 2 miles upriver to a bridge over the Wynoochee River before returning to Coho Campground on the opposite side of the lake in roughly 8 miles.

Plan for a long day (about 13–16.5 miles reported depending on choices) with moderate elevation. The terrain is rolling with up-and-down grades that stay relatively steady rather than turning into sustained big climbs.

Expect water and wet-ground features: the trail’s highlights include small streams and waterfalls, plus time along the Wynoochee River corridor near the upriver bridge section. This is also a good loop for staying close to the lake’s changing shoreline conditions as you move from one side of the reservoir to the other.

The trailhead is within Coho Campground. It’s also listed as accessible from the Wynoochee Lakeshore Trailhead - Tacoma Power Dam, with a specific Wynoochee Lake - Maidenhair Falls trailhead reference for the river/lake connection area.

Season and access matter for logistics: motorized vehicles and stock are prohibited, and the most typical window is mid-spring through early fall (mid-spring use is specifically listed). Treat it like a remote, somewhat maintenance-variable loop—work from recent reports points to overgrowth and blowdowns that can force scrambling or detours.

For route planning, Coho Campground is the designed base for this loop. Recent practical guidance flags washout reroutes near the north-end lake wrapping section and discusses using Forest Road 2294 in that diversion context, plus a Wynoochee River crossing/bridge choice near the upriver segment options.

Preparation: scout and inspect the route around committed features like bridges and any known washout/diversion points, and be ready to navigate around downed trees or through thicker vegetation after rain—conditions are often the difference-maker on this loop. Carry the ability to turn around or short-cut if you hit blocked sections you can’t safely pass.

More information: Visitor information, Coho Campground - Wynoochee Lake Trailhead Camping, WA, Strolling Around Wynoochee Lake - Clearwater Trekking