Fern Flat Fire Road is a hiking, biking, and horse trail in San Diego County, California. It is within Cuyamaca Rancho State Park, Cuyamaca Mountain State Wilderness, and Pilcha (West Mesa) Cultural Preserve. It is 2.6 miles long and begins at 5,410 feet altitude. Traveling the entire trail is 5.2 miles with a total elevation gain of 1,008 feet.
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