Annual event held in September in Crystal Springs, Arkansas. Features a 400 yd Swim, 10 mi Mountain Bike, 3.5 mi Trail Run course. Race day information, registration, and contacts provided.

A 20K trail bike and run team relay event. Teams of two trade a mountain bike for some trail-running and vice versa (for around 10 km of each) near the Boulder Reservoir, Colorado. Held annually in October.

Part of the New Jersey Biathlon series, a 3-race series which includes two King of the Hill Off-Road Biathlons. This annual 5 km trail run, 10 km mountain bike race features registration information, results archive, photo gallery, and links.

The race is entirely off-road and consists of a triathlon (run, kayak, bike) or biathlon (run, bike). Both events are for ages 16 and over. Features dates, history, overview, photo gallery and links.

Annual September event held in Craftsbury, Vermont. Features race day information, registration form, course map, race results and contacts. An XTERRA points series race.