Keystone Opening Date 2024 Season. Arapahoe basin ski area and keystone resort in summit county, colorado announced they will open for the 2024/25 winter season on saturday, nov. Opening day was saturday october 12, with updates to our snowmaking we had our earliest opening in 20 years and are expanding terrain quickly.
Access the mountain this season with mobile pass & lift tickets. Kick off the season in october at keystone resort, with more resorts across the rockies and west opening soon after.