2016 Summer Vacation

We've been going back and forward with Stephen's family trying to figure out vacation plans for this summer. Originally we were going to take a big family trip to the Bahamas, where they've been going their whole childhood, as a guarantee the whole family can go before more kids are added to the Hirst clan. That plan fell through so then we were going to go with his brother, wife and new baby. After thinking about it, we all weren't dying to go and bringing the baby could be risky in a lot of different ways. So after deciding against a family vacation, we settled on a vacation Stephen's been wanting to take for years - Colorado. 

Stephen interned for 2 summers out in Denver and loved it. He's been wanting to take me on a big vacation there to see some of the fun mountain cities. We're looking to go in the June-August time frame and I would LOVE some ideas/advice that y'all have. We're thinking about flying into Denver and staying a night then driving out to Vail for a few days then hitting another city for a few days before returning to Denver for a night and heading home. What would be another fun CO mountain city to visit in the summertime? Breckenridge and Keystone are close to Vail and on the way back to Denver but we're not 100% sure what the other city would be. 

I'd love to hear any recommendations you have! We'd like to keep all the stops within the same area since we'll be driving. 

Linking up with Jessi.