Weathergal - both those tours sound great. We were really considering the Peace Ride and met the organizers - great people, really concerned with getting their ride off the ground. I just ran out of vacation days to do theirs, but I've been on those roads before and they're gorgeous!
The Adventure Cycling tour looks great too! Been on lots of those paths too. The path around Dillon (Lake Dillon?) is just super pretty. I've been up Vail Pass too. Be careful on the descent - there's one steep little dip under the Interstate with a sharp blind turn. Just stay alert, but have fun!
For 3 days, I get to part of a thousand other journeys.