Every year in early November, most park roads close to regular traffic as we prepare for the winter season. The only exception is the road between Mammoth Hot Springs and the northeast entrance, which is open to regular traffic all year. Once enough snow accumulates (usually by mid-December), roads open to “oversnow” travel only. This means the only way to visit Old Faithful, the Grand Canyon of the Yellowstone, and other popular destinations during winter is by guided snowmobile or snowcoach, or through our non-commercially guided snowmobile program. Oversnow travel ends in mid-March, when our plowing crews begin clearing a winter’s worth of snow. Roads start re-opening to normal cars in mid-April.
The following companies are authorized to provide snowmobile and snowcoach tours in Yellowstone:
Backcountry Adventures — (406) 646-9317 — Snowmobile, Snowcoach
Old Faithful Snowmobile Tours — (307) 733-9767; (800) 253-7130 — Snowmobile
Gary Fales Outfitting — (307) 587-3970 — Snowmobile
Yellowstone National Park Lodges — (307) 344-7311 — Snowcoach
Last updated: November 20, 2018