For Vail: Your Vail/Beaver Creek Lift Ticket also gives you full access to Beaver Creek, Breckenridge, Keystone, and Crested Butte.
For Breckenridge: Your Breckenridge lift ticket also gives you full access to Keystone and Crested Butte. Your Breckenridge 3+ day ticket allows you to ski up to half of the total days at Vail and/or Beaver Creek.
For Keystone: Your Keystone 3+ day ticket also allows you to ski up to half of the total days at Vail, Beaver Creek, and/or Breckenridge.
For Northstar: Your Northstar lift ticket also gives you full access to Heavenly and Kirkwood.
For Heavenly: Your Heavenly lift ticket also gives you full access to Kirkwood. Your Heavenly 3+ day ticket allows you to ski up to half of the total days at Northstar.
For Attitash: Your Attitash lift ticket also gives you full access to Wildcat.
For Wildcat: Your Wildcat lift ticket also gives you full access to Attitash.
For Jack Frost Big Boulder: Your lift ticket gives you full access to Jack Frost or Big Boulder.
For all other mountains: Lift tickets are only valid at your specific resort.