On the western slope of Colorado, the famous Kokopelli Trail winds its way through sagebrush, ledgy slickrock, winding double track, sandy washes, fast jeep trails and crosses the state line toward Moab, Utah. This trail is the site of the Desert R.A.T.S. Classic. The 100 kilometer endurance mountain bike race is a challenging out and back test of stamina. Held in May, it’s a great early season test of fitness and a great reason to keep training over the winter and early spring.