Yacht racing is a popular sport, and high-performance catamarans have been developed specifically for the lake.[28] The design of the Alinghi 5, the defender of the 2010 America's Cup, was influenced by those racing catamarans.[28] The best-known event, the "Bol d'Or" (not to be confused with other events having the same name) runs from Geneva to the end of the lake and back.[29]