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Race Across the World contestants Fin Gough and Sioned Cray have said taking part in the programme has inspired them to take on more challenges.
The latest series of the BBC One show saw five pairs race a distance of about 8,700 miles (14,000km) between the Great Wall of China, north of Beijing, and Kanyakumari, the southernmost tip of India.
Just under six million viewers have been tuning in per episode or catching up on iPlayer within a seven day period.
The childhood sweethearts, from Nantgaredig, Carmarthenshire, said while the race was physically and mentally difficult, as "one mistake can cost you", it has also taught them important life skills.