Driggs to Lolo: A Scenic Idaho-Montana Road Trip Guide

The drive from Driggs, Idaho, to Lolo, Montana, covers 320 miles along US-20, US-26, and I-15 before joining US-12 near Missoula. This route traces the path of the Lewis and Clark expedition, who crossed the Bitterroot Mountains via Lolo Pass in 1805. The highway surface changes remarkably near mile 60, where the asphalt transitions to a darker, lava-rich aggregate sourced from the Craters of the Moon volcanic field.

Approximately 85 percent of the route lies above 5,000 feet elevation, with the highest point at 7,370 feet on the Teton Pass approach just west of Driggs. Drivers should budget 5.5 to 7 hours for the journey, not counting stops. Seasonal closures affect Teton Pass (WY-22) during winter storms, so always check road conditions before departing.

Fuel stations are scarce between Arco and Challis (90 miles). Fill up in Idaho Falls or Arco. Gas prices in Driggs average $0.10 higher than in Idaho Falls. Near Lolo, fuel is abundant but expensive — expect $0.15 premium over Missoula prices.

• Road quality: I-15 is excellent; US-20 east of Arco has occasional frost heaves.
• Best rest stop: Lost River Visitor Center (mile 145) with clean restrooms and free Wi-Fi.
• Cell service: Strong on I-15, spotty between Spencer and Leadore.

For a deeper dive on planning stops, refer to how to find the best stops and hidden gems between cities. The route uses a single toll-free corridor; no tolls exist between Driggs and Lolo.

Winter driving is hazardous between November and April due to ice and snow. Chains are required on Teton Pass during storms. Summer brings wildfire smoke reducing visibility; carry an N95 mask.

• Family stop: Bear World in Rexburg (mile 85) — kids can see bears from the car.
• Pet-friendly: Most motels in Arco and Missoula allow pets; rest stops have waste bags.
• Fatigue zones: Long straight sections near Spencer cause monotony; plan breaks every 2 hours.

Recommended rest zones include the Idaho Falls Greenbelt (mile 60) with a paved riverside path. In Lolo, the Lolo Hot Springs (off US-12) provides a relaxing break. Always carry extra water and blankets due to remote stretches.

The route crosses the Snake River Plain, with views of the Lost River Range and Bitterroot Mountains. Near Arco, the landscape transforms into lava flows and volcanic cones, part of the Craters of the Moon National Monument. This area is not a UNESCO World Heritage Site, but the adjacent Yellowstone system is.

• Best photo stop: Highway 33 overlook at mile 42 — panoramic view of the Teton Range.
• Local culture: In Driggs, the Spud Drive-In offers classic films and hand-cut fries. In Lolo, the Fort Fizzle historic site marks a Nez Perce War skirmish.

Agriculture dominates the local economy: Idaho potatoes, Montana wheat, and ranching. Farmers markets operate in Driggs (Saturdays) and Lolo (Sundays) from June to September. Culinary infrastructure includes diners and fast food in Idaho Falls, with fine dining limited to Missoula.