The Adventure Racing World Series Qualifier Circuit unites in competition the world’s best endurance athletes at premiere expedition length Qualifier events around the globe. The top team at each International Qualifier Round gains a coveted position on the start line of the annual pinnacle of the sport, the AR World Championship (ARWC). Each International Qualifier Round in the AR World Series sets a unique expedition length course to test mixed teams of four athletes over a 500+km course and 3-7 days of non-stop racing in the disciplines of trekking, mountain biking, kayaking, navigation and more.