Briones Reservoir Loop

Contra Costa County, California, United States

12.9 miles (20.8 km) · 1,460 ft elevation gain · Loop · trail · Route

Briones Reservoir Loop covers 12.9 miles across Contra Costa County, California, United States. Runners face 1,460 feet of climbing with 1,493 feet of loss. The largest climb extends 4.3 miles, gaining 33 feet. The course averages 117 feet of vertical gain per mile. The course is 81% runnable, with the remainder requiring hiking on steep or technical sections. Trail comprises the majority of the course. Terrain difficulty is rated as very hilly. Difficulty is rated 7.2 out of 10, placing it in the 51.29th percentile. Popular among trail runners and hikers seeking California adventures.