It's roughly 90 minutes from everywhere in the Denver Metro to the Front Range Ski areas. Loveland, A-Basin, Copper, Keystone, Breck, Winterpark. Give or take 10 minutes. Vail/Beaver Creek puts you at about 2 hours.
^this... I padded a bit for weather and traffic. Keep in mind if try this at peak traffic it can take as much as double to get back to Denver from Vail. Traffic at the tunnel can be a bitch!!!!