The stage where everything is decided in teams of four. For the tenth stage—the quarterfinals—the contestants begin the race in Ayutthaya, the former capital of the Kingdom of Siam, a spectacular setting for the starting line. The contestants will race in two teams, each made up of two pairs. Their fate is linked: they will either qualify together or face each other in a final duel. Even the evening stays with Thai hosts will take place under the banner of grouped teams.
