Running Wild with Bear Grylls

Bear Grylls takes actor Zac Efron on an adventure-filled trip into the wilds of the Catskill Mountains.

Bear Grylls takes Ben Stiller on an epic adventure of survival through the mountains of Scotland's Isle of Skye.

Hollywood superstar Channing Tatum and Bear Grylls chopper into the wilds of the Sierra Nevada for a high altitude, high stakes adventure.

Kate Hudson teams up with Bear Grylls for a harrowing trek across the Italian Alps.

Modern Family star Jesse Tyler Ferguson joins Bear Grylls on a snowy survival trek across Europe's jagged South Tyrol.

Academy award winner Kate Winslet follows Bear Grylls on a harrowing trek through Wales' Snowdonia mountains.

Pop superstar Nick Jonas joins Bear for a thrilling, chilly trek through the snowy mountains of the Sierra Nevada.

Actress, singer, dancer, adventurer? Julianne Hough joins Bear for an emotional and breathtaking journey in the African Savanna.

Bear takes actress Courteney Cox on a harrowing and emotional trek through the Irish Highlands.

Actor, writer and director Joseph Gordon-Levitt gets up close and personal with wildlife and reaches new heights on his inspiring two-day trek with Bear through the rugged desert of Kenya's northern plains.

Actress Keri Russell joins Bear on a daring two-day adventure through the unstable terrain of the volcanic Canary Islands off the west coast of Africa, where they tackle steep cliffs and deep gorges before soaring to new heights.

Actress Lena Headey joins Bear on a two-day expedition through the unforgiving landscape of the Iberian Peninsula, complete with steep cliffs and icy waters. Lena's known for playing fierce women, but is she tough enough to survive the wild?

Actress Brie Larson accompanies Bear Grylls on a jungle adventure across a remote island in the Gulf of Panama. They begin their journey by jumping out of a helicopter into the ocean. From there, they make a perilous trek through a crocodile-filled mangrove swamp that turns into a dangerous maze as the tide rises.

The often clever, always snarky actor and comedian Joel McHale joins Bear Grylls in the Arizona desert for an adventure unlike any other. They set out to traverse a massive slot canyon in hopes of surviving the wild, but first they have to survive one another! Huge cliffs, nasty food and unorthodox survival strategies abound in this hilarious misadventure

Actress, supermodel and social-media influencer Cara Delevingne realizes a long-held dream of accompanying Bear Grylls on an adventure. Sweeping Cara off her scooter and onto a helicopter, Bear leads Cara up the mountains of Sardinia. At nearly a mile high in elevation, Bear shows Cara how to brave several heart-stopping obstacles including pulling herself across a horizontal line suspended 200 feet in the air and rappelling down a dangerous waterfall.

Actor Anthony Mackie joins Bear Grylls for a journey in the Italian Dolomites mountain range.

"Brooklyn Nine-Nine" star Terry Crews joins Bear Grylls on an epic journey across Iceland's treacherous terrain. Their adventure begins with a heli-ski ride into the mountains, where they must descend a volcanic scree slope without setting off a deadly rock avalanche. Survival is the name of the game for this NFL linebacker turned actor—from trying to cross freezing, violent floodwaters without drowning to finding warm shelter to avoid hypothermia—but nothing can prepare Terry for being tossed out of a plane at 12,000 feet!

Bear Grylls takes champion racer Danica Patrick out into the Moab desert for some high-octane, pulse-pounding action in the wild. Together they face off against venomous creatures, sheer cliffs and scorching heat as they make their way across some of the harshest terrain around. Still, nothing is more intimidating than the final challenge that leaves even Danica Patrick unnerved.