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Most Yellowstone Park Roads Closed to All Vehicles - NPS
Most Park Roads Closed to All Vehicles Most roads are closed to prepare for commercially-guided snowcoach and snowmobile travel during the winter season, which will begin December 15 (weather depending). The road between the North and Northeast entrances is the only road open year-round to regular vehicles. The only road generally open year-round to regular vehicles is from the North Entrance at Gardiner, Montana, through the park to Cooke City, Montana (via Tower Junction). Most park roads are closed to regular vehicles from early November to late-April, and are open to limited oversnow travel (commercially-guided snowmobiles and snowcoaches) from mid-December to mid-March. When open, roads are not gated at night and people may enter/exit the park 24 hours a day, seven days a week. Yellowstone has five entrance stations, and it takes several hours to drive between them. Anticipate possible road closures, and check the road status of the entrance you intend to use...