Harvest Hammer Duathlon Sports, Multi-Sports, Duathlon, Events - Harvest Hammer Duathlon. Duathlon situated in the heart of Northwestern Illinois. http://www.harvesthammer.org/
Dannon Duathlon Championship Series Sports, Multi-Sports, Duathlon, Events - Dannon Duathlon Championship Series. Schedule, results, registration, photos. http://dannonduathlon.com/
Apple Duathlon Sports, Multi-Sports, Duathlon, Events - Apple Duathlon. It is a 10k-42k-5k event. http://www.appleduathlon.com/