By the time I returned from Colorado in August I had climbed 16 of the 17 highest paved passes in the state. Hoosier Pass on CO 9 between Breckenridge and Fairplay, 11,539 feet, has eluded me to this point. If I can get to Colorado again in the near future I'll try to make a point of completing this climb. If I get to ride the CRMBT next summer I would also add Cottonwood Pass, west of Buena Vista, 12,126 feet. Cottonwood is only paved on the east side, but it sounds as if the climb on hard-packed dirt up the west side would make for a great descent into Buena Vista.
There are other mountains to climb, passes to ride, and tours I would like to try, but I wouldn't mind revisiting some of the places I've been. There is a loop from Durango to Ouray to Telluride to Cortez to Durango which would be part old, part new, and all spectacular. If I can find the time and the money, I'm full of ideas.
In order of elevation, these are the passes I've ridden to date: