Running Wild With Bear Grylls

Bear takes tennis phenomenon Roger Federer into the cold, wet Swiss Alps as they put his tennis and survival skills to the test.

Joseph Gordon-Levitt is a multi-hyphenate creative. Will he add "adventurer" to the list after following Bear through Kenya?

Whether it's riding a paraglider or crossing a narrow row of rocks, Lena Headey shows she's not just a tough girl on-screen but in real life too.

While up the snowy peaks of the Pyrenees, Emmy winner Uzo Aduba must face a minefield of loose rocks and deadly snakes.

Bear takes Keri Russell to the Canary Islands, where she must find her footing in unstable volcanic terrain and conquer tall cliffs.

For two days the mountains of New England, Bear and Don Cheadle dangle from helicopters, traverse waterfalls on cables and eat some questionable food.

From navigating dark caves in night vision to hunting a snake, Bear leads Scott Eastwood through the Balkans while discussing his bond with his father.

Dance dynamo Derek Hough explores the Rila mountains in Bulgaria and gets candid with Bear about fitting in and being bullied.