Running Wild with Bear Grylls

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

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

MSNBC anchor and reporter Tamron Hall steps outside her comfort zone to explore the beautiful but brutal desert of southern Utah with the legendary Bear Grylls.

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

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

Fast and Furious star Michelle Rodriguez pushes the boundaries of adventure as she and Bear Grylls journey across the high desert of Nevada.

Fantastic Four star Michael B. Jordan braves a pounding surf, towering cliffs and freezing nights as he and Bear Grylls venture through the highlands of Wales.

Bear and President Obama venture into the wilds of Alaska, sharing stories and conversing on everything from fatherhood to climate change.

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

The basketball legend joins Bear in the Adirondack Mountains for a strenuous hike filled with laughs and Shaqs witty insights.

Americas Got Talent judge and pop icon Mel B roughs it with Bear on the shark-infested waters of the Irish coast.

This Is Us star Sterling K. Brown steps outside his comfort zone to join Bear on a trek through the icy mountains of Colorado.

Vanessa Hudgens joins Bear Grylls on an adventure in the High Sierra.

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.

Actor Don Cheadle tackles the unrelenting White Mountains of New England as Bear pushes him to leap outside his comfort zone across rugged and remote terrain teeming with dangerous animals - including the threat of a wild bear!

Actor Scott Eastwood joins Bear for an exhilarating two-day adventure through an ancient labyrinth of cliffs and treacherous caves deep in the Balkan Peninsula.

Orange Is the New Black actress Uzo Aduba joins Bear for a heart-stopping adventure in Spains remote Pyrenees mountains, where steep cliffs, deadly predators and punishing weather test Uzos mental and physical resolve on a truly wild adventure.

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

Comedic actor Rob Riggle joins Bear Grylls on an adventure on Iceland’s Vatnajokull Glacier. Their journey begins with a helicopter ride over “the land of fire and ice,” aptly named for constant volcanic activity beneath the surface. Once dropped off, Bear and Rob must navigate a stretch of jagged ice fields, deep moulins and deep crevasses. Without food or supplies to make shelter, their mission is to find an airdropped emergency cache.

Bear Grylls takes former WWE world champion and action star Dave Bautista on a super-sized adventure in the Arizona desert. Navigating through perilous canyon descents, brutal falls and the raging Colorado River is no easy task. With Bear as his tag-team partner, Dave is up for the challenge to see if he still has that fight inside, but Mother Nature could prove to be his toughest opponent yet in this match of a lifetime.

Free Solo rock-climber Alex Honnold joins Bear Grylls for a breathtaking adventure through the Swiss Alps! Alex is no stranger to dizzying heights, but he’s not used to falling from them, so Bear kicks off the journey with a skydive into the jagged mountains. From there, it’s a six-mile trek through craggy valleys and sheer cliffs where Bear teaches Alex how to survive in the wild, but the tables turn when Alex takes Bear on a hair-raising climb.

Bear Grylls and actor Zachary Quinto race the clock to traverse a dense Panamanian jungle before an impending storm makes landfall. Their adventure begins with a helicopter ride, but once dropped off deep in the brush, they must rely on a primitive navigation technique to help them reach their extraction point, and it won’t be easy! From massive cliffs and steep ravines to an underground river cave and an old crashed plane, there are obstacles at every turn.

"Brooklyn Nine-Nine" star Terry Crews joins Bear Grylls on an epic journey across Icelands 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 inspires Rainn Wilson to work for it by having him search for hidden caches in the aspen forest and alpine terrain of the La Sal mountains in a time-tested method of mountaineering training. Bear pushes Rainn to the limits of his endurance with dangerous rappels and dizzying climbs, but its not until they fish for food that things take a revealing turn in what is definitely the most naked RUNNING WILD in the history of the show!

Bear Grylls takes LA icon and living legend Danny Trejo out into the staggering peaks and steep canyons of Arches National Park in Utah. Under scorching temperatures, Bear and Danny climb massive boulders and traverse sheer cliffs in order to reach their extraction. Even Dannys days in prison cant prepare the shows oldest competitor as he squares off against the intense heat and treacherous obstacles of Mother Nature herself.

Bear takes Bobby Bones back into the wild with his new fiancee, Caitlin Parker.