My brother in law and I are doing the Copper Triangle Aug. 6th. We were going to head out to Colorado Wednesday prior and wanted to find a good place to ride Thursday and Friday mornings for a few hours to acclimate to the elevation and just get some riding in acclimate to climbing at elevation. He and my sister are staying with some friends in SE Denver. Since he doesn't want to drive 70 miles each day to Copper Triangle to ride and I don't want to have to drive 70 miles to Denver to take my wife on the "touristy" things during the afternoon and evening, I was trying to find a something literally just 5-20 miles west of Denver (we will stay at Copper Triangle hotel the night before and i will find a hotel in Denver or just west the couple of nights before). Idaho Springs looked like a good place and with Mt. Evans, that may be a fun place to ride. Does anyone have any good suggestions who are familiar with the area? My guess is 30-50 mile training rides with some good climbing (and then the ever fun descent back to the cars) and relatively safe to cycle. I heard that Colorado is pretty biker friendly so probably not an issue. Thanks!