The former cross country runner is now one of the top competitors on the obstacle racing scene.
The Australian athlete talks about how she trains for long-distance obstacle races.
Alex Roudayna is an emerging international obstacle racing star.
This former collegiate track runner has become a force on the obstacle racing circuit.
Pak blends his passion for obstacle course racing with his mechanical engineering background.
Here's a glance at 14 of the toughest obstacles you'll encounter in a Spartan Race.
Will the Death Race continue? Or will another event emerge?
Hunter McIntyre is one of the young stars of the emerging sport of obstacle course racing.