Saturday. We started out of Breckenridge on a 75 mile ride at about 40 degrees. We took an off road bike trail that meandered through fields and forest from Breckenridge through frisco over the Dillon lake dam and ending in Silverthorne. Most of the ride was gently down hill following the blue river, then the Colorado river came into play and we ended in hot sulphur springs near the Colorado river head waters.