FAQ
Yellowstone National Park Frequently Asked Questions
Find direct answers regarding park rules, driving times, and geyser eruptions.
What is the best time of year to visit Yellowstone?
June through September is the best time for general access. During these months, all roads are open to regular vehicles. Early fall offers good wildlife viewing with smaller crowds. Read our Best Time guide.
How many days do you need to see Yellowstone National Park?
You need at least three full days to see the main highlights without rushing. The park covers 2.2 million acres. Driving between locations takes significant time due to low speed limits and wildlife traffic jams.
Which entrance is the best for Yellowstone?
The West Entrance in West Yellowstone is traditionally the busiest and closest to the major geyser basins. The North Entrance offers year-round vehicle access to Mammoth Hot Springs. Read more in Yellowstone Airports.
Do I need a reservation to enter Yellowstone National Park?
You do not need a reservation just to enter the park. However, you do need advance reservations if you plan to sleep at any of the 11 campgrounds or park lodges.
How much does it cost to get into Yellowstone?
A standard 7-day vehicle pass costs $35. Starting in 2026, non-US residents 16 and older must pay an additional $100 per person fee. Read more about Yellowstone Entrance Fees rules.
Can you drive through Yellowstone in one day?
Yes, but you will spend mostly all day in your car. The Grand Loop Road is 142 miles long. If you only have one day, consider a guided tour like lower loop tour to maximize your stops.
What are the absolute top attractions in Yellowstone?
The most famous attractions are Old Faithful, Grand Prismatic Spring, and the Grand Canyon of the Yellowstone. Mammoth Hot Springs and Lamar Valley are also highly popular. See our Geysers and Springs overview.
Where is the best place to see wildlife in Yellowstone?
Lamar Valley and Hayden Valley are the premier wildlife viewing spots. Lamar is best for wolves and grizzlies, while Hayden is famous for massive bison herds. Consider a guided trip like lamar valley safari hike.
Are there grizzly bears in Yellowstone National Park?
Yes. Yellowstone is a prime habitat for grizzly bears. You must maintain a strict distance of 100 yards from bears at all times and carry bear spray while hiking.
Is it safe to visit Yellowstone?
Yes, if you follow park rules. Never approach wildlife, stay strictly on boardwalks in thermal areas, and drive cautiously. Hot springs are dangerous, and animals are unpredictable.
When does the Old Faithful geyser erupt?
Old Faithful typically erupts every 90 minutes. Eruptions shoot water up to 180 feet in the air. Check the visitor center for the exact predicted time when you arrive.
Can you swim in any of the hot springs in Yellowstone?
No. Swimming or soaking in hot springs is strictly prohibited and extremely dangerous. The water in thermal features has caused severe and fatal burns.