Olga Koch and Thanyia Moore - who are friends from the comedy circuit - head to Bulgaria for a high-octane adventure that takes them across two epic mountain ranges.

Olga Koch and Thanyia Moore - who are friends from the comedy circuit - head to Bulgaria for a high-octane adventure that takes them across two epic mountain ranges.

Jamali Maddix and Larry Dean experience the Land of the Thunder Dragon, a place of mystery and wonder in the rarely-visited and remote kingdom of Bhutan.

Jamali Maddix and Larry Dean experience the Land of the Thunder Dragon, a place of mystery and wonder in the rarely-visited and remote kingdom of Bhutan.

Jess Fostekew and her good friend and fellow comedian Desiree Burch take on an utterly insane trip across Colorado's Rocky Mountains in a Wild West adventure.

Jess Fostekew and her good friend and fellow comedian Desiree Burch take on an utterly insane trip across Colorado's Rocky Mountains in a Wild West adventure.

David Harewood and best friend Fraser James swap the sets of Hollywood for a new challenge in Slovenia where they face some of the most dangerous roads in Europe.

David Harewood and best friend Fraser James swap the sets of Hollywood for a new challenge in Slovenia where they face some of the most dangerous roads in Europe.

Mike Wozniak and Ola Labib head to one of the wildest places on Earth - the Namib desert - to meet for the first time and have each other for company on their journey.

Mike Wozniak and Ola Labib head to one of the wildest places on Earth - the Namib desert - to meet for the first time and have each other for company on their journey.

Former Soccer Saturday buddies Jeff Stelling and Chris Kamara reunite for an epic journey across Sri Lanka where they reaffirm their friendship along the way.

Former Soccer Saturday buddies Jeff Stelling and Chris Kamara reunite for an epic journey across Sri Lanka where they reaffirm their friendship along the way.

Joe Swash and Seann Walsh are no strangers to jungles after appearing on I'm A Celebrity..., but neither of them has sought an ancient Mayan temple in Guatemala before.

Joe Swash and Seann Walsh are no strangers to jungles after appearing on I'm A Celebrity..., but neither of them has sought an ancient Mayan temple in Guatemala before.

Rhod Gilbert and friend and fellow comedian Angela Barnes cross Italy's most treacherous Alpine roads in Rhod's first adventure since being treated for cancer.

Rhod Gilbert and friend and fellow comedian Angela Barnes cross Italy's most treacherous Alpine roads in Rhod's first adventure since being treated for cancer.