World's Most Dangerous Roads

Comedian Sue Perkins and adventurer Charley Boorman travel across Alaska to the notorious Dalton Highway - a dirt track built in the 1970s as a supply road to support the Trans-Alaska oil pipeline. Highway maintenance is a full time job here with avalanche units operating throughout the year. As Arctic conditions close in on them, the pair have to rely on the help of hardcore truckers for whom the highway is home. The rules of the road are: keep the CB radio switched on, dont exceed 50mph, and when an 18-wheel truck comes thundering down the rollercoaster of a road towards you, get out of the way!

Ben Fogle and Hugh Dennis travel from the Peruvian Andes to the depths of the Amazon, in search of the lost city of Constitucion.

Sue Perkins and Liza Tarbuck drive the legendary Ho Chi Minh Trail, a network of dangerous roads hacked through mountains and jungles of Laos and Vietnam.

During the tail end of the rainy season, Angus Deayton and Mariella Frostrup drive up Madagascars eastern coast.

Funny men Phill Jupitus and Marcus Brigstocke head to Bolivia for a high-altitude road trip that promises adrenalin, hilarity and drop-dead beautiful scenery. Already good friends, the terrified duo first have to survive Bolivias infamous Road of Death only to find themselves deep in notorious bandit country. Disorientation takes them by surprise as they have to navigate the stunning Salar de Uyuni, a salt lake so vast that Buzz Aldrin could see it from space. Their goal is to reach the ancient mountain city of Potosi whose silver once financed the great Spanish empire but at almost 5000 meters above sea level this proves to be a heart stopping finale.

Another thrill-seeking adventure, this time with long-term mates Joe Wilkinson and Zoe Lyons - whove travelled to gigs together for years - taking on the wilds of eastern Turkey.

Another thrilling escapade in the wild - this time sees actor Stephen Mangan and comedian Lara Ricote, who have never met before, aim to reach the northernmost point of Australia.

Jamie-Lee ODonnell and Saoirse-Monica Jackson, who are best friends and stars of the hit sitcom Derry Girls, head way out of their comfort zone as they tackle rugged Romania.

Comedians Maisie Adam and Suzi Ruffell wouldnt call themselves road aficionados - it took 10 goes to pass their driving tests between them - but theyre tackling Morocco anyway.

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

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.

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

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.

Comedians Babatunde Aleshe and Kae Kurd go on an unforgettable journey through the Lower Zambezi Valley, a place where the local wildlife is almost as terrifying as the roads.

Jack Dee and Jake Lambert team up for a thrilling ride through the wilds of Kyrgyzstan, battling terrifying mountain roads, and a mystery illness that threatens their entire trip. Starting from the capital, Bishkek, Jack and Jake face multiple obstacles, from horrifyingly narrow roads with only a sheer drop for company, to muddy tracks rendered almost undriveable by rainstorms.

Rhod Gilbert presents a selection of some of the funniest and most dramatic moments from recent series of the programme.