Broomfield-based Vail Resorts announced the opening dates for the 2024/25 winter season at its various mountain resorts. The season kicks off in mid-October at Keystone Resort, pending early season conditions. Listed below are the scheduled opening dates for additional resorts: Mid-October: Keystone (CO) Nov. 8: Breckenridge (CO) Nov. 15: Vail Mountain (CO) Nov. 22: Whistler…