Coming March 22, 2014. As they say, “Time to get hard Corps!”. The Hell Fire Fat Tire Mountain Bike Race, held at the Marine Corps Base at Camp Pendleton in Southern California, is your only chance as a civilian to mountain bike on base. Choose from a 15 mile or 25 mile course on dirt roads with stunning views of the mountains and valleys. There’s a killer hill call The Climb, also referred to as Seven Steps to Heaven because of its elevation climb from sea level to slightly over 600 feet. A unique setting for a challenging mountain bike race!