Gardiner to Island Park: Geyser-Fed Highways & Alpine Views

Departing Gardiner, MT, the road immediately hugs the Yellowstone River as it carves through the Gardner Canyon, where the river's roar and towering rhyolite cliffs set a dramatic tone. The route follows US-191 south, crossing into Wyoming at the park boundary, then turns west onto US-20 near West Yellowstone, ending in Island Park, ID — a total of 78 miles.

Learn how to find the best stops and hidden gems between cities with this practical guide.

Fuel stations are sparse between Gardiner and Island Park, so fill up before leaving. The only reliable options along the way are in West Yellowstone, 52 miles in, and in Island Park itself. As of 2024, regular gasoline in West Yellowstone averages around $4.10 per gallon, typically 20–30 cents higher than in Gardiner.

• Distance: 78 miles; drive time without stops is about 1 hour 50 minutes.
• Road condition: Paved two-lane highways with occasional wildlife crossings; bridges are well-maintained.
• Winter: US-191 can be icy and windy; check the Montana DOT and Wyoming DOT for closures.
• Summer: Traffic into Yellowstone can be heavy from 10 AM to 3 PM.

US-20 between West Yellowstone and Island Park is a wider, modern highway with a 65 mph speed limit, whereas US-191 through the park is slower (45–55 mph) due to curves and wildlife. Both roads are plowed regularly in winter, but studded tires or chains are advisable from November to March.

Most of the route sits at elevations between 6,600 and 7,400 feet. At these heights, temperatures can swing 30°F in a single day, and afternoon thunderstorms are common in July and August.

No tolls are on this route, but a Yellowstone National Park entry fee is required (valid for 7 days) if you enter the park. The West Entrance fee station is near West Yellowstone.

Wildlife is the biggest hazard: deer and elk often graze along the roadside, especially at dawn and dusk. Drive defensively, use high beams when no oncoming traffic, and be prepared to stop suddenly. Collision with a moose can be fatal, so heed warning signs.

• Fuel economy: On this high-altitude route, expect 10–15% lower MPG than on flat roads.
• Bring bear spray if hiking; black bears and grizzlies populate the area.
• Cell coverage: Verizon and AT&T work in towns but drop to zero in canyon stretches.

Two designated rest areas on US-191 offer picnic tables and vault toilets: the Obsidian Creek rest area at mile marker 22 and the Norris Geyser Basin parking lot has flush toilets (parking fee applies). US-20 has a scenic overlook just west of West Yellowstone with Montage views of the Madison Range.

For families, the Museum of the Yellowstone in West Yellowstone offers interactive exhibits on natural history, and the Playmill Theatre presents live shows nightly in summer. Do not miss the Grizzly & Wolf Discovery Center, which rescues orphaned animals.

If you need to stretch your legs, take the Riverside Trail at the west edge of West Yellowstone. It follows the Madison River and is stroller-friendly for the first mile.

Restrooms are available at the Flying J Travel Center in West Yellowstone, but note that they are reserved for paying customers. In Island Park, the Conoco station has clean restrooms. As a general rule, never pass up an opportunity to use facilities — restroom scarcity is a common complaint.

For fatigue management, the drive is short, but altitude can cause drowsiness. Rotate drivers if possible, and stop at the Hebgen Lake overlook to enjoy the scenery. If you are towing a trailer, be cautious on the 6% grades near the Gallatin Canyon.

The route offers several hidden off-route spots, such as the Fairy Falls trailhead 2 miles before Old Faithful (accessible via a 2.5-mile hike), and the Meadow Lake overlook near Quake Lake. These places require a short detour but reward with solitude.

The road follows the northern boundary of the Yellowstone Plateau, a volcanic hotspot known for its geothermal features. For 22 miles, the road parallels the Gallatin River, a favorite for rafters and anglers. The Roosevelt Arch, built in 1903 at the park's north entrance, marks the start of the journey, and its rustic stone frame has become an iconic photo stop.

Outside the park, Island Park sits in the caldera of the Henry's Fork Caldera, an ancient volcanic crater filled with basalt flows and pine forests. The area's volcanic soil gives rise to hearty wildflowers in spring and supports a large elk herd.

• Best stops between Gardiner, MT and Island Park, ID: Boiling River hot springs (2.5 miles north of Mammoth Hot Springs), Roaring Mountain (a thermal area with steam vents), and Hebgen Lake.
• The Yellowstone region is a UNESCO World Heritage Site encompassing over 2.2 million acres, recognized for its geological significance.
• Local commerce thrives in West Yellowstone, where shops sell fly-fishing gear, and in Island Park's country stores stocking supplies.

Island Park's culinary scene is sparse but hearty. The historic Last Chance Saloon serves burgers and cold beer, while the Island Park Mercantile offers sandwiches and groceries for picnics. For fine dining, head to the Ponds Restaurant in West Yellowstone.

West Yellowstone has a nostalgic Main Street with a gas station, post office, and souvenir shops, all catering to park visitors. During the summer, the town hosts an evening rodeo at the Yellowstone Rodeo Grounds.

Agriculture in the Island Park area is limited to huckleberry picking and trout fishing. The adjacent Caribou-Targhee National Forest offers hiking and camping away from the crowds.