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.
Huge participation numbers and TV contracts are increasing exposure. As Amelia Boone headed to the starting line at the 2013 Spartan Race
U.S. obstacle course racing championships are getting more hype, sponsors and exposure. The Tough Mudder mud obstacle event series is
There will be four major obstacle racing championship events in the U.S. this fall.
Racing in the mud has become wildly popular in the U.S.