|The two previously separate ski areas of Whistler and Blackcomb were integrated into one operation in 1997 after Intrawest merged with Whistler Mountain Ski Corporation. Ticketing, pass, and access control systems for the two ski areas were fully integrated in 2003.
Together, Whistler and Blackcomb form the largest ski area in North America at 8,171 acres (33 km2), 54% larger than that of Vail, the next largest, which has 5,289 acres (21.40 km2). Both mountains have some of the largest lift-serviced vertical skiing in North America, with Blackcomb having the most at 1,565 m (5,133 ft), but marketed as one mile (1.6 km) . Whistler has slightly less vertical at 1,530 m (5,020 ft). The highest lift elevation, on Blackcomb, is 2,240 m (7,349 ft). [Source: Wikipedia]