Traveling to Aspen for a week in early August. There are 3 couples going. We are in our 50's and fit for our age and looking for some fun things to do. Specifically I would like to know if there is someplace to rent bikes. It seems like having a bike in Aspen would be a fun way to see the town and do some off-roading. Would like to do a couple of hikes (and/or bike/hikes), hot springs, rafting and would like to know more about Music Festival. Any suggestions or must do's would be appreciated. Also suggested outfitters and nightlife, restaurants! Thanks so much!!!