Updated Thursday, March 15, 2018
Yellowstone National Park, Grand Teton National Park & Region
Most interior park roads are only open to snowcoaches or snowmobiles.
The road between the North Entrance (outside Gardiner) and the Northeast Entrance (serving Silver Gate and Cooke City) remains open all year.
The Dunraven Pass remains closed to all vehicle travel.
2018 Winter Closing Dates
Select Yellowstone roads will close to oversnow vehicles at 9 p.m. on the following days:
- March 1: Sylvan Pass (Closed)
- March 4: Mammoth to Norris (Closed)
- March 6: Norris to Madison, Norris to Canyon (Closed)
- March 11: Canyon to Fishing Bridge (Closed)
All remaining interior park roads (except the North-Northeast Entrance road) will close for the season March 15, 2018.
2018 Spring Opening Dates
Starting in mid-April, Yellowstone National Park begins reopening roads to regular vehicle travel. All roads listed below reopen at 8 a.m. their scheduled day:
- April 20: West Entrance to Madison, Mammoth to Old Faithful, Norris to Canyon
- May 4: Sylvan Pass, Canyon to Lake
- May 11: South Entrance to West Thumb, Lake to West Thumb, Craig Pass, Tower Junction to Tower Fall
- May 25: Dunraven Pass
The Beartooth Highway, which connects the Northeast Entrance to Red Lodge/Billings, Montana, also opens May 25, weather permitting.
Typically, while the park is plowing roads in anticipation of summer, bikes are permitted to ride on select routes almost exclusively.
The Importance of Knowing Yellowstone Road Conditions
Navigating Yellowstone National Park is both simple and complicated. It’s simple in one sense in that the main road, the Grand Loop, provides access to all services inside the Park, and the simplicity of the road plan makes it highly unlike you’ll get lost. On the other hand, given the long stretches of road between services, you’ll want to plan ahead, as it takes some time to get around (the posted speed limit is 45 MPH, and that limit is certainly enforced by Park officials), which makes a knowledge of Yellowstone road conditions so important. At this time of year only part of the Park is open to road traffic, while plows groom the roads in the rest of the Park for snow coaches and snowmobiles in coming weeks.