With smoke choking air, loose trail, and massive rocks, the Kamikaze Bike Games Enduro, held September 18-19, was grueling for the 370 racers who competed Saturday and Sunday. As the final round of the California Enduro Series and the big money Golden Tour, the four stage race took place at close to 10,000 feet of elevation, pushing riders to get off their brakes and on their game as they vied for the top spot on the podium.