Stetattle Creek Trail

Stetattle Creek Trail is a 6-mile out-and-back from Diablo townsite to where the distinct tread fades, about 3 miles each way. It follows the creek through moss and ferns, climbs onto Sourdough Mountain’s slope, then traverses forest with only occasional peak glimpses. It’s a moderate hike with about 1,100 feet of gain; allow three to four hours, since the rough creekside sections and stream crossings slow the miles. The creek is the payoff, not a summit or open panorama.

The path starts just past Stetattle Creek Bridge at the Diablo town entrance and passes a housing area before reaching the creek bank. The first mile is the lushest: moss, ferns, and blue-green water. Rock scrambling beside the creek makes this a poor match for anyone expecting a smooth stroll. Glaciers high on McMillan Spires and Davis Peak grind rock into fine particles that give the water its blue-green cast. Watch the midstream rocks for American dippers and listen in the creekside brush for winter wrens.

At roughly 1.6 miles, the trail climbs quickly on switchbacks, then eases into a narrow traverse through mature, drier forest on Sourdough Mountain’s slope. Small tributaries cross the path, and snowy peaks appear only in glimpses. The track grows faint and dwindles around mile 3. Turn around at the last distinct tread; going farther means route-finding and cross-country travel.

This is a primitive, hiker-only trail. Pets aren’t allowed. There are no designated campsites along it; overnight camping requires a backcountry permit and a legal campsite at least half a mile from the trail, difficult to find in this rugged valley. There’s no toilet at the trailhead.