Washington trails › North Cascades
Hiking trail · North Cascades · Nearest town: Marblemount, 18.6 mi / 30.0 km away
Sourdough Mountain Trail is a one-way hike of 10.3 mi / 16.6 km near Marblemount. Expect about 5,059 ft / 1,542 m of elevation gain, with a high point of 5,988 ft / 1,825 m. Difficulty: Moderate. At an average pace, plan on about 7 hr 3 min one way.
Along the route: low 942 ft / 287 m · high 5,935 ft / 1,809 m