Big Marvine Loop (CO)

Rio Blanco County, Colorado, United States

22.9 miles (36.9 km) · 3,320 ft elevation gain · Loop · trail · Route

Big Marvine Loop (CO) is a 22.9-mile loop route in Rio Blanco County, Colorado, United States, gaining 3,320 feet of elevation. The route follows a steadily descending elevation profile, finishing 223 feet lower than it starts. The terrain breaks into 3 distinct sections including 2 significant climbs. The longest climb covers 11.4 miles gaining 2,881 feet at an average 4.2% grade. About 69% of the terrain is runnable, with significant hiking sections. The route opens with a climb and finishes with a descent.