Here are Colorado's opening dates
Openings by Date
Wolf Creek October 8, 2011
Arapahoe Basin October 13, 2011
Loveland October 14, 2011
Copper Mountain November 4, 2011
Keystone November 4, 2011
Breckenridge November 11, 2011
Winter Park November 11, 2011 **(update)**
Eldora Mountain November 18, 2011
Vail November 18, 2011
Aspen November 19, 2011 **(update)**
Snowmass November 19, 2011 **(update)**
Beaver Creek November 23, 2011
Steamboat November 23, 2011
Monarch Mountain November 23, 2011
Crested Butte November 23, 2011
Telluride November 24, 2011
Ski Cooper November 24, 2011 (weekends)
Purgatory November 25, 2011
Echo Mountain TBD
Sunlight December 2, 2011
Silverton December 3, 2011
Howelsen December 3, 2011
Powderhorn December 8, 2011
Aspen Highlands December 10, 2011
Buttermilk December 10, 2011
Solvista December 14, 2011
Ski Cooper December 16, 2011 (daily)