America's Toughest Enduro? America's Toughest Enduro? Vital MX Play Again The 2021 Shady Burro Enduro is a long, grueling two days on your dirt bike. It has the spirit of a hard enduro, with the organization of a Reliability Enduro. Credit: Seat Time woodybepierced 11/2/2021 3:35pm 0 comments Sort: Newest FirstOldest FirstPopular To post, please join, log in or connect to Vital using your Facebook profile Login with Facebook.