Carquinez Bridge to Bridge Loop (CA)

Contra Costa County, California, United States

30.2 miles (48.6 km) · 3,141 ft elevation gain · Loop · trail · Route

The Carquinez Bridge to Bridge Loop (CA) is a 30.2 mile route in Contra Costa County, California, United States. The course features 3,141 feet of elevation gain and 3,136 feet of descent. The longest climb spans 2.8 miles with 159 feet of gain. Elevation gain averages 109 feet per mile. Approximately 81% of the route is runnable. The route follows trail surfaces. The course features very hilly terrain. The course difficulty of 12.1 puts it in the top 28.75% of challenging routes at this distance. This loop route attracts trail runners and hikers exploring California's mountain terrain.