We were up in the Fort Collins area and took a day to ride up Poudre River valley to the pass (10K+ feet), still had snow, real nice ride up. also went to Estes Park near Denver, it had just opened for the holiday weekend and the pass was still closed, but the views from the pullovers on the way up are spectacular. We were in CO for 4 days, the rest of the trip was traveling. don't try to see too much, soak in what you can get to, CO will always be there. Have Fun!