An Off-Road Challenge happens at a Spartan Race™.
It is a course specially marked out for The Biggest Loser RunWalk Off-Road Challenge Series. Spartan race is the global leader in Obstacle Racing since 2005 and is the perfect opportunity to challenge yourself in the great outdoors. Courses at Spartan are combination trail run, obstacle course, and mud run. Take your workout to the next level and challenge yourself at a Biggest Loser Off Road event.