Boulder Flat Via Burcham Flat Road is a 34.6 mile out and back trail located near Bridgeport, CA and is good for all skill levels. The trail is primarily used for off road driving and is accessible from May until November. 34.6 miles 8264 feet Out & Back kid friendly off road driving Expand Map Sign up now to see this map! Reviews (0)Photos (0)Recordings (1)No one has reviewed this trail yet. Be the first!