The Grand Loop Road connecting Yellowstone's five entrances covers roughly 142 miles, and the common mistake is assuming you can drive it comfortably in a half day. You cannot. With stops for wildlife jams, hydrothermal features, and canyon viewpoints, plan for 4-7 hours minimum for the full loop - and that's if you're disciplined about stopping. Most visitors underestimate the driving time between destinations, especially when a bison herd decides to use the asphalt.
The Drive at a Glance
The Grand Loop forms a figure-eight pattern through the park's 3,500 square miles, connecting the major geothermal basins, the Grand Canyon of the Yellowstone, and Yellowstone Lake. The road is fully paved and suitable for any passenger vehicle - no high clearance or four-wheel drive needed during summer months. RVs and trailers up to 40 feet can manage the route, though some pullouts and parking areas are tight.
Roads open seasonally. As of summer 2026, the West Entrance to Old Faithful, Mammoth Hot Springs, Norris Junction to Canyon Village, and Canyon Village to Lake Village are all open to regular vehicles. Additional roads open through May, weather permitting. The North Entrance near Gardiner, Montana, is the only entrance open to wheeled vehicles year-round.
Drive the loop clockwise from the West Entrance to avoid the worst of the tour bus traffic. Buses tend to run the southern loop counterclockwise from West Yellowstone, so you'll meet fewer of them head-on going the other direction.
Road surface and restrictions: Paved, two-lane roads throughout. Speed limits range from 35-45 mph. No off-road driving is permitted anywhere in the park - "jeep trails" here means the scenic paved routes, not technical off-roading. Vehicle entrance reservations are not needed as of 2026, though you still need an entrance pass. Best direction to drive: Clockwise from West Entrance or North Entrance. You hit the major geyser basins in the morning when crowds are thinner and reach the canyon viewpoints in later afternoon light.
Stop by Stop
Old Faithful and the Upper Geyser Basin
From the West Entrance, Old Faithful is approximately 31 miles southeast. Expect 45-60 minutes of driving time, depending on wildlife on the road. The parking lot fills by 9 AM June through August. Arrive earlier or plan to park in overflow lots.
From this overlook you can see the cone of Old Faithful and the surrounding geyser basin. The eruption intervals range from 60-110 minutes. Check the predicted times posted in the visitor center or on the NPS app - cell service drops out at several points along the approach road.
What most visitors miss: the smaller geysers on the boardwalk behind the main viewing area. Aurum Geyser and Fan Geyser are both in the Upper Geyser Basin and erupt less predictably but with far fewer people watching. The park service recommends spending at least 90 minutes here, not just the 20 minutes most people allocate for watching one eruption.
Fountain Paint Pot Trail
About 12 miles north of Old Faithful on the Grand Loop Road. This short boardwalk loop covers all four types of hydrothermal features - geysers, hot springs, mud pots, and fumaroles - in about 20 minutes. The trail is flat and fully accessible. Early morning is your best bet for visible steam rising off the features before the heat of the day dissipates it.
Grand Canyon of the Yellowstone
Located at the junction of the Grand Loop Road and the Canyon Village area, approximately 16 miles east of Norris Junction. The canyon cuts through rhyolite rock, with the Yellowstone River dropping 308 feet at the Lower Falls.
From this overlook you can see the canyon walls in layers of yellow, orange, and pink - the source of the name "Yellowstone." The North Rim and South Rim drives branch off the main loop and add about 6 miles round-trip. The parking situation here is competitive by 10 AM. The South Rim lots fill first because they're closer to Artist Point.
Rangers will tell you the view from Brink of the Lower Falls Trail is worth the switchbacks. It's a steep 0.6-mile round-trip descent, and the elevation gain is 600 feet on the way back. Pack extra water for this stretch - it catches people off guard.
West Thumb Geyser Basin
On the western shore of Yellowstone Lake, about 22 miles south of Canyon Village junction. The geyser basin sits right on the lake shore, which creates an unusual visual - hot springs steaming against cold lake water. The boardwalk loop takes 30-45 minutes. Early morning is your best bet for wildlife on the lake; eagles and osprey fish along the shoreline.
Timing and Crowds
The Grand Loop is busiest from mid-June through mid-September. July and August see the highest traffic volume, with 10+ minute delays at bison jams and entrance stations.
Best time of day to drive: Start by 7 AM. You'll reach Old Faithful by 8:30 from the West Entrance, before the coach tours arrive (typically 9:30-11 AM). The canyon viewpoints are best photographed in late afternoon light, so timing the loop clockwise means you hit the canyon around 3-4 PM. Tour bus patterns: Buses run the southern loop counterclockwise from West Yellowstone between 8:30 AM and 3 PM. Going clockwise, you'll encounter them head-on but in fewer numbers than you would following the same direction. Road closure seasons: The West Entrance closes to wheeled vehicles from early November through the third Friday in April, and reopens to tracked oversnow vehicles December 15-March 15. The East Entrance typically opens the first Friday in May. Check road status before you arrive - conditions change with weather.
Driving Logistics
Parking: Old Faithful has the largest lots but they fill daily by 9 AM in summer. Canyon Village lots fill by 10 AM. Smaller pullouts along the road (Artist Point, Brink of the Lower Falls) fill by 9:30. Have a backup plan - if one lot is full, the next overlook is usually 1-3 miles down the road. Gas availability: Stations at Canyon Village, Fishing Bridge, Grant Village, and the West Entrance. They close seasonally. In summer, all operate 8 AM to 6 PM or later. No gas between Mammoth and Tower-Roosevelt (about 20 miles) during shoulder seasons. Cell service: Drops out on most of the Grand Loop. Some service exists at Old Faithful, Canyon Village, and Mammoth Hot Springs. Download offline maps and eruption prediction apps before you arrive. RV restrictions: All roads on the Grand Loop accommodate RVs, but some pullouts are too short for vehicles over 20 feet. The parking at Fountain Paint Pot and West Thumb is tight for big rigs. Use the overflow lots at Old Faithful and Canyon Village. Gardner River High Bridge: Expect single-lane traffic with up to 15-minute delays, 24 hours a day, April through October 2026. Oversized vehicles (8'6"+ wide, 75'+ long, or 80,000+ lbs) cannot cross during this period.
Practical Takeaways
- Drive the Grand Loop clockwise from the West Entrance to minimize meeting tour buses head-on.
- Start driving by 7 AM to secure parking at Old Faithful and the canyon overlooks.
- The full loop takes 4-7 hours with stops - allocate a full day if you want to hike any trails.
- Gas up at West Yellowstone or Gardiner before entering; in-park stations charge premium and have limited hours.
- Download offline maps. Cell service drops out on most of the loop.
- Check the NPS alerts page before departure - road conditions and construction delays change weekly in spring and fall.
- The entrance pass is required but vehicle reservations are not needed as of 2026 - though an annual America the Beautiful Pass may save you money if you're visiting multiple parks.
---
For more information, see our complete National Park Guide. Related: Yellowstone national park lodges guide Related: Yellowstone national park hotels guide