Check out this video of the Motorcycle Trials World Championships in Sequatchie Valley.

Thousands of spectators attended the Trials World Championships at the Trials Training Center in Sequatchie Valley on Saturday. The event, which hosts motorcycle riders from throughout the world, including Japan, Great Britain, Spain and the United States, returned to North America for the first time since 2008. Trials riders attempt to guide their motorcycles over difficult terrain, including large rocks, trees and steep hills, without placing their feet on the ground.