5 pairs of travellers race from London to the Far East without taking a single flight, a budget and with no smartphone in sight.
Cast: John Hannah
The teams have reached the halfway point of their journey. For the next leg, must choose whether to travel through Bolivia or Chile - both countries with unstable political climates. Sam and Jo decide to break up their travel with regular breaks, while Jen and Rob have an explosive argument when they get caught up in Bolivia's general election.
The teams venture through Peru's high altitudes as the race reaches the halfway mark - but the first hurdle they face is bypassing the ongoing state of emergency in Ecuador, and drastic measures are required to ensure the competitors' safety.
Setting off from Panama City, the remaining four teams take to the Caribbean Sea, but there are complications when a state of emergency is declared in the destination of their next checkpoint.
Five teams set off from Mexico City – a gargantuan metropolis and the largest Spanish speaking city in the world - in a race to reach the most southerly city in the world, Ushuaia in Argentina.