One of Flagstaff's longest standing MTB events, held at the Arizona Nordic enter.  Escape the heat and come play in the Aspens. This is the The Bear Jaw Groove! 6 hour MTB Relay (Single, Duo, Quad) and 22 Mile Sprint, 33 Mile Endurance, and the 44 Mile Ultimate! Registration https://runsignup.com/Race/AZ/Flagstaff/Bearjaw 16848 US-180, Flagstaff, AZ 86001