Model Kelly Brook and Radio 2 DJ Scott Mills are among the famous faces who will compete in the second series of Celebrity Race Across The World.
The Bafta TV award-winning show will see four celebrities, along with a family member each, embark on a 12,500 km race.
Brook, 44, will be joined by her husband Jeremy Parisi while Mills, 51, will be joined by his husband Sam Vaughan, whom he married in the spring.
There is also Ted Lasso actor Kola Bokinni who will appear on the show with his cousin Mary Ellen.
Their journey will begin in Belem, northern Brazil, and the celebrities will pass through five checkpoints across the length of South America to reach the finish line in the Andes, Frutillar in southern Chile.
The six-part series will see the contestants say goodbye to lavish transport, smartphones and bank cards as they will instead have to rely on their skills, cunning and ingenuity.
Last year, broadcaster Alex Beresford and his father Noel were crowned the winners of the first series, batting off competition from McFly drummer Harry Judd and his mother Emma, who came second, and All Saints singer Melanie Blatt and her mother Helene, who were third.
Tim Harcourt, chief creative officer for Studio Lambert, said: “After the phenomenally successful run of the first celebrity series, and more recently the fourth series of the regular series, we can’t wait to bring audiences along with us to the huge South American continent and its jaw-dropping scenery, in a race which will push our celebrities and their loved ones to their absolute limits.”
Catherine Catton, head of commissioning, factual entertainment and events, said: “We’ve been delighted by the success of celebrity Race Across The World, and are now incredibly excited to see some new famous faces and their loved ones take on this difficult yet highly rewarding race of a lifetime.
“We cannot wait to watch their journey unfold.”
The programme will return for its second series at 9pm on Wednesday August 14 on BBC One and BBC iPlayer.