British comedian Sue Perkins and adventurer Charley Boorman travel across Alaska the hard way, in a domestic 4x4 on a route only ever intended for 18 wheel juggernauts. Show more

This week, Sue meets some of the very few locals who live along the route and, in the most challenging leg of their journey, Charley and Sue drive over The Atigun Pass. Show more

British comedians Rhod Gilbert and Greg Davies attempt to drive across Nepal, one of the poorest, least developed, most mountainous countries on earth. Show more

This week Greg and Rhod head towards Kathmandu via the Prthvi Highway - one of Nepal's most dangerous roads. Show more

Adventurer Ben Fogle and comedian Hugh Dennis drive a historic route from the Peruvian Andes to the depths of the Amazon. Show more

Ben and Hugh reach the Huancabamba Canyon, a notoriously unstable road with drops of 300 metres into the river below. Show more