Running Wild with Bear Grylls: The Challenge

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, 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.