Dara and Ed's Great Big Adventure Ed Byrne and Dara O Briain embark on a 4,000-mile pan-American adventure as they retrace a journey originally undertaken during the 1940s by three men from Detroit.

Arizona to Southern Mexico
They begin in Arizona before heading over the border into Mexico, where they see lucha libre wrestlers, visit a state-of-the-art coffee farm, and explore the remains of the ancient Zapotec civilisation of Monte Alban. They also witness the stream of migrants risking their lives to reach the US as they ride a freight train know as La Bestia.

Guatemala to Nicaragua
Ed Byrne and Dara O Briain head into Guatemala as they continue their road trip, visiting Lake Atitlan to pay their respects to Mayan deity Maximon, exploring the ancient colonial city of Antigua and scaling the nearby active volcano Pacaya. In El Salvador, they learn first-hand about the gangs that make it one of the most violent countries in Central America, before they cross the border into Nicaragua, where they meet two Sandinista veterans who helped overthrow the Somoza regime in the 1970s.

Costa Rica to Panama
Ed and Dara travel south through the Costa Rican mountains, where they learn how to herd cattle on horseback at a ranch before visiting an animal rehabilitation centre. They then explore the capital San Jose on election day before driving over the Cerro de la Muerte - which translates as the Mountain of Death. They then cross into Panama and experience the wonders of the world-famous canal linking the Atlantic to the Pacific, before heading to their final destination at the town of Yaviza, where the Pan-American Highway comes to an end