October 25th is Xterra World Championships

XTERRA is a series of cross triathlon races, i.e. three-sport races which include swimming, mountain biking, and trail running. The XTERRA Global Tour is owned and produced by TEAM Unlimited. The XTERRA race series is the best-known series of cross triathlons, and is considered by most to be the de facto world championship of the sport.

It began in 1996 on the Hawaiian island of Maui as the Aquaterra, and was later renamed the XTERRA. The Japanese company Nissan Motors Corporation named their popular sport utility vehicle (the Nissan Xterra) in 1999 after the race and was the race series' primary sponsor from 1998 to 2006, when the two companies parted ways.