XTERRA is the world’s premier off-road multisport event. An extreme competition, the XTERRA format combines swimming with mountain biking and trail running. It has been described as one part triathlon, one part mountain bike race, and one part “survival of the fittest”.
The typical distances are a 1.5k swim, 30k mountain bike, and 10k trail run. Courses are designed to have top pros finish in roughly two-and-a-half hours. Generally the swim comprises 10% of the total race time, the mountain bike 65%, and the run 25%.