During the winter season, they provide several snow coach tours from various locations. Beyond Cooke City the road is closed to wheeled vehicles November through April. The road from Mammoth to Norris is open to wheeled vehicles from the third Friday in April through the first Sunday in November, and to tracked oversnow vehicles from the third Wednesday in December to Monday of the first full week in March. Services are available year around. West Entrance - Adjacent to the town of West Yellowstone, MT, the West Entrance is open to wheeled vehicles from the third Friday in April through the first Sunday in November, and to tracked oversnow vehicles from the third Wednesday in December to Monday of the second full week in March.
Services are available year around.
See our Road Construction Page for information about possible delays. Opening dates for roads east of Cooke City vary from year to year, depending on the weather. Services are available year around. The West Yellowstone, MT airport is serviced from June to early September. Bus service from Bozeman, MT to West Yellowstone, MT via Highway 191 is available all year.