Oursan Trail is a hiking, biking, and horse trail in Contra Costa County, California. It is 4.3 miles long and begins at 661 feet altitude. Traveling the entire trail is 8.7 miles with a total elevation gain of 2,236 feet. The Bearinda Cove (elevation 502 feet) and Pereira Cove (elevation 502 feet) bays can be seen along the trail.
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