The Amazing Race is an American reality game show in which typically eleven teams of two race around the world. The race is split into roughly twelve legs interspersed with physical and mental challenges, and require teams to deduce clues, navigate themselves in foreign areas, interact with locals, perform physical and mental challenges, and vie for airplane, boat, taxi, and other public transportation options on a limited budget provided by the show. Teams are progressively eliminated at the end of most legs; with the final leg's grand prize of US$1 million. As the original version of the Amazing Race franchise, the CBS program has been running since 2001. Season 25 premiered on September 26, 2014. Numerous international versions have been developed following the same core structure, while the U.S. version is also broadcast to several other markets.