Running Wild using Bear Grylls, the survivalist takes one particular star to the most distant places from the U.S. and all over the globe for a 48-hour journey of a life. From skydiving in the Catskill Mountains, to rappelling down the cliffs of Utah and combating rain and torrential wind in Scotland, each star and Grylls will have to push their heads and bodies to the limit to successfully complete their journey.