While Boulder itself is a bit too warm to host a ski area, nearby Eldora Ski area (about 40 minutes from town) is a great local option. Eldora has a good mix of runs, is family friendly and best of all, avoids the notorious traffic that tends to plague I-70. Which isn't to say there aren't great places to go via the interstate, but it can get quite busy on weekends. Loveland Ski area, a little over an hour from town, is family owned and a great place to get turns without a long drive. Only a bit further, Winter Park, Keystone, Arapahoe Basin and Breckenridge ski areas all fall within a two-hour driving radius of Boulder. Colorado's legendary ski culture is only a short drive away and you can be back in town in the same day.