Boulder River Trail is a round-trip hike of 8 mi / 12.8 km near Oso. Expect about 1,056 ft / 322 m of elevation gain, with a high point of 1,552 ft / 473 m. Difficulty: Moderate. At an average pace, plan on about 3 hr 56 min.
Elevation profile
Along the route: low 906 ft / 276 m · high 1,535 ft / 468 m