Running Wild with Bear Grylls: The Challenge - Episode Guide

Bear takes Academy Award(R) winner Natalie Portman into the slot canyons of Southern Utah. Their adventure begins when Bear leaps from his helicopter onto Natalie's 4x4. They trek into the Escalante desert, where Bear teaches Natalie piton placements, rope system transfers and fire starting while descending various canyons. Natalie uses her new skills as they ascend a mountain and attempt to light a signal fire for extraction.

Bear teaches Simu Liu essential survival skills in the sub-zero weather of the Canadian Rockies.

Bradley Cooper joins Bear on an adventure through the rugged canyons of the Wyoming Basin. Bear teaches Bradley how to use a grappling hook gun, as well as key mountaineering rope skills, to traverse a series of towering ravines. The two spend the night hanging on the side of a cliff, and on day two, Bradley is faced with daunting challenges during a harsh winter snowstorm.

Bear Grylls takes prolific Marvel superstar and venerated actor Benedict Cumberbatch on an adventure across the Isle of Skye in Scotland. They descend massive sea cliffs and brave freezing waterfalls. Bear teaches Benedict unique survival skills and surprises Benedict by connecting him to a part of his past with a once-in-a-lifetime experience.

Bear Grylls takes singer-actress Cynthia Erivo to the highest mountains in Wales, where Bear trained in the British Special Forces. Bear teaches Cynthia how to rappel into and navigate a labyrinth of caves before they traverse a frigid and thunderous waterfall. On day two, Cynthia uses the skills she learned on day one to embark on her own, find Bear, and make it to their extraction.

Bear takes his first deaf guest, Academy Award-winning actor Troy Kotsur, on an adventure in the Scottish Highlands. Bear and Troy must find a new way to communicate as they push themselves to the limits, traversing perilously steep mountains and raging rivers, but it's the silence that builds their strongest bond.

Bear Grylls takes actor, activist and author Russell Brand on an adventure down the jagged coast of a secluded Scottish isle in search of 16th-century castle ruins to shelter in. Along the way, Bear teaches the brash and bombastic Brand survival skills that dredge up a long-forgotten but highly charged fear he must overcome to reach his extraction.

Bear Grylls takes singer-songwriter, actor and designer Rita Ora on an adventure in the Valley of Fire. The journey launches into high-octane action with the pair skydiving from 10,000 feet, plunging them into the desolate terrain. Bear teaches Rita how to navigate, find water, and rock climb, as he prepares her to earn her extraction on day two.

Bear Grylls takes actor, musician and "Hamilton" star Daveed Diggs on an adventure in the Great Basin Desert to teach him to track, climb and eat whatever the desert provides. On day two, Daveed must fly solo and put his skills to the test by using what he's learned to find Bear and earn his extraction.

Bear Grylls invites "She-Hulk" and "Orphan Black" star Tatiana Maslany on a journey across Wyoming's Laramie Mountains. Tatiana admits that she's fearless on the screen, but she can't tap into that same bravery in the real world. So, Bear challenges Tatiana to conquer massive cliff rappels, menacingly icy cliffs, and a zero-degree cold shock to the body to help her overcome her fears.