National park
Yellowstone National Park
The world's first national park, with more than half of the planet's active geysers.
- Established
- 1872
- States
- WY, MT, ID
- Grand Loop
- 142 mi
- Best season
- Jun–Sep
Before you go
- The Grand Loop Road forms a figure eight, so plan one region per day.
- Stay on boardwalks in thermal areas. The crust can be thin.
- Keep at least 25 yards from bison and elk and 100 yards from bears and wolves.
Where to base yourself
West Yellowstone is closest to the geyser basins. Gardiner is open year-round and closest to Mammoth. Inside the park, lodges and campgrounds are booked months ahead.
FAQs
When do the roads open?
Most roads open in stages from mid-April to late May and close in early November. The north entrance road is open all year.
