If you didn't drive to Wyoming, rent a car once you arrive. The airports have major car-rental agencies, which offer four-wheel-drive vehicles and ski racks. Aspen Rent-A-Car, a local agency in Jackson, rents cars, full-size vans, and sport utility vehicles; another local agency in Jackson, Eagle Rent-A-Car, provides cars and package deals with sport utility vehicles and snowmobiles. Rent-A-Wreck, in Lander, rents used cars.
Aspen Rent-A-Car (345 W. Broadway, Jackson. 307/733-9224). Avis (Jackson Hole Airport. 307/733-3422). Budget (Yellowstone Regional Airport. 307/587-6066 or 800/527-0700). Eagle Rent-A-Car (375 N. Cache Dr., Jackson. 307/739-9999 or 800/582-2128). Hertz (Jackson Hole Airport. 800/654-3131.) Rent-A-Wreck (715 E. Main St., Lander. 307/332-9965). Thrifty (Jackson Hole Airport. 307/734-8312).