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.

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

Olympic gold medalist Lindsey Vonn joins Bear on a harrowing journey along the Corsican coastline.

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

Super Bowl champion Marshawn Lynch puts his survival skills to the test on a two-day adventure with Bear in Corsica.

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

In honor of Red Nose Day, Oscar-winning actress Julia Roberts accompanies Bear on a two-day wilderness trek to deliver lifesaving vaccines to a remote Kenyan village.

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