Yes, you can drive through Yellowstone, but only on specific roads and with real restrictions
Yellowstone National Park has a 142-mile loop road system that you can drive year-round, plus several connector routes that close seasonally. You don't need a special permit to drive through — just a vehicle entrance pass ($35 per car as of 2024, valid for seven days). The catch is that the park enforces strict speed limits, has narrow sections where RVs and trailers face length restrictions, and seasonal closures can shut entire sections without warning. Winter driving is possible but requires chains or all-terrain tires, and some roads close entirely from November through April.
Most people drive the Grand Loop Road, which connects the park's five entrance stations and major attractions. It takes eight to ten hours to drive the full loop without stops, though most visitors spend two to three days. The road is well-maintained but winding, with pullouts at geysers, hot springs, and viewpoints that can add significant time to your trip.
Key Takeaways
- The Grand Loop Road is 142 miles and takes eight to ten hours to drive without stops, but most visitors spend two to three days exploring.
- You need a $35 vehicle pass valid for seven days, and RVs or trailers longer than 40 feet cannot drive some sections of the park roads.
- Winter driving requires chains or all-terrain tires, and several roads close from November through April depending on snow conditions.
- Speed limits are 45 mph or lower on most park roads, and the park has no gas stations between certain sections, so plan fuel stops in advance.
- Wildlife can cause traffic jams lasting hours, and stopping within 25 yards of most animals or 100 yards of bears is illegal.
The Grand Loop Road and what each section connects
The Grand Loop Road forms a figure-eight shape with five entrance stations: North (Gardiner, Montana), Northeast (Cooke City, Montana), East (Cody, Wyoming), South (Jackson, Wyoming), and West (West Yellowstone, Montana). The loop is divided into five main segments, each with different scenery and attractions.
The northern section from Gardiner to Mammoth Hot Springs to Norris covers 28 miles and passes through the park's only year-round open road. Mammoth Hot Springs has terraces you can walk, and the road stays open in winter. The western section from Norris to Madison to the West entrance is 34 miles and includes the Lower Geyser Basin and Fountain Paint Pot. The southern section from Madison through Old Faithful to West Thumb is 32 miles and includes the park's most famous geyser. The eastern section from West Thumb to Fishing Bridge to the Northeast entrance is 27 miles and passes Yellowstone Lake. The northern return from Fishing Bridge to Mammoth is 21 miles through the Lamar Valley, known for wildlife viewing.
Vehicle restrictions and what they mean for your trip
Yellowstone limits RVs and trailers to specific roads based on length. Vehicles longer than 40 feet cannot drive the road from Mammoth Hot Springs south to Norris, or from Norris west to Canyon. Vehicles longer than 35 feet cannot drive from Canyon south to Fishing Bridge. If you're towing a trailer, check the park's website for current restrictions before you enter, because the rules change based on road maintenance.
Oversized vehicles can still enter the park and drive the main loop, but they must take longer routes. A 45-foot RV can drive from Gardiner to Mammoth, then east to Fishing Bridge, then south to the East entrance, then west to the South entrance, then north to Madison and back to Gardiner — but not the direct shortcuts. This adds 20 to 30 miles to your route and several hours to your drive time.
Rental car companies often prohibit driving gravel roads in the park, so if you're renting, confirm which roads you're allowed to use. Some companies restrict travel on the Northeast entrance road (Cooke City to Mammoth) because it's narrow and winding.
Seasonal closures and winter driving requirements
Most Yellowstone roads close from early November through mid-April, depending on snow. The North entrance to Mammoth stays open year-round, and the road from Mammoth to Norris usually opens by mid-April. The road from Norris to Canyon and from Canyon to Fishing Bridge typically open in late April. The southern loop (Fishing Bridge to West Thumb to Old Faithful to Madison) usually opens in late April or early May. The Northeast entrance road (Mammoth to Cooke City) closes in October and reopens in mid-May.
Winter driving in Yellowstone requires either chains or all-terrain tires rated for snow. The park does not allow studded tires. Roads are plowed but can ice over quickly, and visibility can drop to near-zero in whiteouts. The speed limit drops to 25 mph on winter roads, and some sections close temporarily after heavy snow. Check the park's website for current road conditions before you leave your hotel, because closures can happen with little notice.
Gas, food, and services along the loop
Yellowstone has no gas stations between certain sections, and prices are higher than outside the park. The nearest gas is at Mammoth Hot Springs, Norris, Canyon Village, Fishing Bridge, Old Faithful, and Madison. The longest stretch without gas is from Fishing Bridge to Old Faithful (about 50 miles), so fill up before you enter that section. Gas stations have limited hours, especially in shoulder seasons, and may close without notice if staffing is short.
Food is available at restaurants and cafeterias at Mammoth, Norris, Canyon, Fishing Bridge, Old Faithful, and Madison, but hours vary widely. Most close by 9 or 10 p.m., and some close entirely in winter. Grocery stores are small and expensive. Many visitors bring coolers with sandwiches and snacks to avoid long waits at restaurants during peak season (July and August).
Wildlife traffic and stopping rules
Yellowstone's wildlife can stop traffic for hours. Bison herds cross roads without warning, and a single elk or bear can cause a jam of hundreds of cars. The park's stopping rules are strict: you must stay at least 25 yards (about 75 feet) from bison, elk, deer, and bighorn sheep, and at least 100 yards (about 300 feet) from bears and wolves. Violating these distances can result in a $110 fine and removal from the park.
If you see wildlife, pull completely off the road into a designated pullout. Do not stop in the travel lane or on the shoulder. Do not approach animals for photos, even if they appear calm. Bison can run 35 mph and have gored visitors who got too close. Bears can run faster than humans and have attacked people who surprised them or got between a mother and cubs.
Driving times between major stops
| Route | Distance | Driving Time (no stops) | Typical Time with Stops |
|---|---|---|---|
| Gardiner to Mammoth to Norris | 28 miles | 45 minutes | 2 to 3 hours |
| Norris to Madison to West entrance | 34 miles | 50 minutes | 2 to 3 hours |
| Madison to Old Faithful to West Thumb | 32 miles | 1 hour | 3 to 5 hours |
| West Thumb to Fishing Bridge to Northeast entrance | 27 miles | 45 minutes | 2 to 3 hours |
| Fishing Bridge to Mammoth (Lamar Valley) | 21 miles | 40 minutes | 2 to 4 hours |
| Full Grand Loop Road | 142 miles | 8 to 10 hours | 2 to 3 days |
Frequently Asked Questions
Do I need a reservation to drive through Yellowstone?
No reservation is required to drive the park roads. You pay the $35 entrance fee at the gate when you arrive. The fee is per vehicle and valid for seven days. If you're staying overnight in the park, you need a separate reservation for lodging or camping, but that doesn't affect your ability to drive.
Can I drive through Yellowstone at night?
Yes, but it's not recommended. Roads are narrow and winding, wildlife is active at dawn and dusk, and there are few streetlights. If you must drive at night, use headlights and reduce speed. Many visitors hit animals or miss pullouts because of poor visibility.
What happens if I break down on a park road?
Cell service is spotty throughout the park. If you break down, stay with your vehicle and wait for a ranger or other visitor to report you. The park has towing services, but they can take hours to arrive in remote areas. Carry water, a phone charger, and a spare tire. AAA membership may cover towing, but confirm coverage before you enter.
Can I drive off-road or on closed roads?
No. Off-road driving is prohibited, and driving on closed roads can result in fines up to $300 and removal from the park. Closed roads are marked with gates and signs. The park enforces these rules with rangers and cameras.
What's the best time of year to drive through Yellowstone?
Late May through September offers the most open roads and the most wildlife viewing, but also the most traffic. July and August are peak season with hour-long waits at popular pullouts. September and early October have fewer crowds and still-open roads. Winter driving is possible but requires chains and experience with snow roads.