Arapahoe Basin Discount Ski Rentals Discount Ski Rentals: Christy Sports is at the base of Keystone, which is very close to Arapahoe Basin. 10-20% off booking thru the link above (or below). Call (970) 513-4647 for Christy Sports in Keystone Ski Resort at the Base. 219 River Run Rd Keystone, CO, 80435 There are several other Christy shops in the area so check the map under Keystone on the Christy site!