Driggs to Polson Road Trip: Scenic Drive Through Idaho & Montana

The drive from Driggs, Idaho to Polson, Montana covers about 320 miles (515 km) through two mountain ranges and along the edge of a major lake. It takes roughly 5.5 to 6.5 hours without stops, but most travelers stretch it to a full day.

• Start at the Teton Valley floor (elevation 6,200 ft) near the west side of the Tetons.
• Head north on ID-33, then US-20 through the Henry's Fork Caldera.
• Cross into Montana via US-287 near West Yellowstone, then US-191 north.
• Finish along MT-35 beside Flathead Lake's east shore.

This route passes through part of the Greater Yellowstone Ecosystem and the Lewis and Clark National Forest. The road is well-maintained but has some winding sections. how to find the best stops and hidden gems between cities

Historically, this corridor followed Native American trade routes between the Shoshone and Salish tribes. Later, it became part of the Nez Perce Trail. Today, it offers a mix of geothermal features, dense forests, and lake views.

• Mammoth Hot Springs (in Yellowstone) is a short detour from West Yellowstone.
• The route crosses the Continental Divide at Targhee Pass (elev. 7,200 ft).
• Flathead Lake is the largest natural freshwater lake west of the Mississippi in the lower 48 states.

Fuel is available about every 30-50 miles, but between West Yellowstone and Bozeman there is a 70-mile stretch with no services. Fill up in Driggs (several stations) or in West Yellowstone. Polson has multiple gas stations near the lake.

• Driggs: Chevron, Sinclair, ConocoPhillips (open 6am-10pm).
• West Yellowstone: Shell, Exxon (higher prices, seasonal hours).
• Bozeman: numerous stations along Main Street and 7th Avenue.
• Polson: Sinclaire, Exxon, and a few independent stations.

Average gas price along the route: $3.50-$4.20 per gallon (summer 2024). Budget around $45-$60 for a typical SUV. Credit cards accepted everywhere, but cash preferred at some remote stations.

Road quality is generally excellent: US-20, US-191, and MT-35 are paved and well-marked. US-191 from West Yellowstone to Bozeman is curvy and narrow in places; watch for elk and bison at dawn/dusk. MT-35 has smooth asphalt but occasional frost heaves near lakeshore.

• Cell coverage: Verizon and AT&T have good signal from Driggs to West Yellowstone, then spotty until Big Sky. Excellent again from Bozeman to Missoula, but variable on MT-35.
• Rest stops: official rest areas near Targhee Pass (Idaho side) and north of Bozeman (Montana side). Many pullouts along US-191.
• Food: cafes in Driggs (Teton Thai, Butter Cafe), West Yellowstone (Running Bear Pancake House), Bozeman (Plonk, Main Street Overeasy), and Polson (Kwataqnuk Restaurant).

The route showcases a dramatic transition from the Teton Basin to the Madison River valley. Just north of Driggs, the Big Hole Mountains rise to the west, while the Tetons dominate the east.

• Top natural attractions: Mesa Falls (near Ashton, ID), Earthquake Lake (north of West Yellowstone), and Flathead Lake's Wild Horse Island (accessible by boat from Polson).
• UNESCO World Heritage Sites: Yellowstone National Park (a short detour) is a UNESCO site. The core route passes through the park's western edge at West Yellowstone.
• Hidden off-route spots: Harriman State Park (swans and trumpeter swans), Ennis Lake (fishing), and the ghost town of Elkhorn near Polson.

Local commerce along the route is driven by tourism: fly-fishing outfitters, dude ranches, and art galleries. In Driggs, the Spud Drive-In is a classic. West Yellowstone sells geeky souvenir shops. Bozeman has a thriving downtown with breweries and bookstores. Polson features Native American art from the Flathead Reservation.

Climatic conditions vary significantly by elevation and time of year. Summer (June-Sept) is ideal: daytime highs 70-85°F, clear skies. Fall (Oct-Nov) brings crisp air and golden aspen. Winter (Dec-Mar) can be harsh: snow from Nov-April, mountain passes require chains or 4WD. Spring (Apr-May) is muddy and sometimes rainy.

• Route aesthetics peak in late September (fall colors) and late June (wildflowers).
• Weather alert: Targhee Pass and the stretch near Big Sky can experience sudden thunderstorms and hail in summer.
• Best time to drive: 8am-2pm to avoid afternoon storms and glare.

Safety is a priority: the route is generally safe but demands attention on windy sections. Wildlife crashes are common: deer, elk, moose, and even bison near Yellowstone. Speed limits: 65-70 mph on US-20 and US-191, 55-65 mph on ID-33 and MT-35.

• Emergency services: limited from Driggs to West Yellowstone (call 911). Bozeman has a major hospital. Polson has a clinic.
• Road quality rating: 4/5 with minor rough patches near Hebgen Lake.
• Tips: keep a spare tire, carry water, and download offline maps for spotty sections.

Family and child suitability: high. Children enjoy Mesa Falls, the Grizzly & Wolf Discovery Center in West Yellowstone, and the playgrounds in Ennis. There are restrooms at every town and at most scenic pullouts.

Pet-friendly framework: most restaurants with patios accept dogs. The route has many short nature trails where leashed pets are allowed (e.g., Helios Bend west of Driggs, portion of the Gallatin National Forest). Pet stations exist at rest areas. Avoid leaving pets in cars during summer heat.

• Pet-friendly motels: Super 8 West Yellowstone, Days Inn Bozeman, and Red Lion Polson.
• Water and shade are abundant at rest stops.

Fatigue management: break every 2 hours. Ideal stop points: Ashton (mile 30), West Yellowstone (mile 55), Big Sky (mile 95), Bozeman (mile 140), and Missoula (mile 230, slight detour). Use the how to find the best stops and hidden gems between cities guide for offbeat breaks.