Coeur d'Alene to Riverton: Ultimate Road Trip Guide

The 760-mile journey from Coeur d'Alene, ID to Riverton, WY takes you through the heart of the Northern Rockies, following US-95, I-90, and US-26. This route crosses the Continental Divide twice: once at Lookout Pass (4,730 ft) on the Idaho-Montana border and again near Togwotee Pass (9,658 ft) in Wyoming.

Originally a corridor for fur trappers and Native American trade routes, today it offers a mix of glacial lakes, geothermal wonders, and high plains. The driving time is approximately 12-13 hours without stops, but plan for 2-3 days to explore fully. Is it worth driving Coeur d'Alene to Riverton? Absolutely: you'll traverse six mountain ranges and two national parks.

I-90 is well-maintained with wide shoulders; US-26 from Moran to Riverton is two-lane with occasional gravel patches. Speed limits: 70 mph on interstate, 55-65 mph on undivided highways. Drive with headlights on in Yellowstone (required year-round).

• Emergency services: dial 911; roadside assistance via AAA or local tow trucks in larger towns.
• Animal collisions: most common between dusk and dawn in Yellowstone and Teton areas.
• Weather alerts: check National Weather Service for mountain passes.

For family suitability, consider child-friendly stops like the Grizzly & Wolf Discovery Center (West Yellowstone; open daily) or the Butte Mining Museum (underground tour). Kids will enjoy the IMAX theater in Jackson Hole.

Pet-Friendly Framework

Pets are allowed in national forests but restricted on trails in Yellowstone and Grand Teton (only in developed areas and campgrounds). Most hotels in Jackson and West Yellowstone are pet-friendly with fees ($20-$50 per night).

• Rest stops with pet areas: Coeur d'Alene Rest Area (US-95), Butte Rest Area (I-90 exit 127), Moran Junction Rest Area (US-26).
• Veterinarians: West Yellowstone Animal Clinic (406-646-7650), Jackson Hole Animal Hospital (307-733-2406).

Fatigue Management & Rest Zones

Plan rest stops every 2 hours. Recommended breaks: Wallace, ID (historic mining town), Ennis, MT (Madison River fly fishing), and Dubois, WY (Wind River Native culture).

• Overnight options: Super 8 in West Yellowstone, Rustic Inn Creekside in Jackson.
• Avoid driving the Togwotee Pass after dark; it's steep with no guardrails.

Fuel stations are plentiful along I-90 but become sparse on US-26 east of Moran Junction. Fill up in Missoula, Butte, and Jackson. Expect gas prices 10-15% higher in remote areas like West Yellowstone.

• Recommended fuel stops: Coeur d'Alene (multiple stations), Missoula (exit 101), Butte (exit 127), West Yellowstone (US-20), Jackson (WY-22).
• Cell service: AT&T and Verizon work on I-90; spotty in Yellowstone and US-26.
• Roadtrip essentials: carry paper maps, extra water, and blankets for high passes.

For more on finding stops along the way, check out how to find the best stops and hidden gems between cities.

Climatic Conditions & Route Aesthetics

Summer (June–August) is peak season with temperatures 70-85°F, but afternoon thunderstorms are common in the Rockies. Fall (September–October) offers vibrant aspen colors, especially along US-26 through Bridger-Teton. Winter (November–March) closes high passes like Togwotee; check road conditions at 511.

• Best time for wildflowers: late June at higher elevations.
• Avoid driving at dusk in Yellowstone due to wildlife collisions.

The route passes two UNESCO World Heritage Sites: Yellowstone National Park (designated 1978) and adjacent Grand Teton National Park (designated 1984). Yellowstone features half the world's active geysers, including Old Faithful. Grand Teton's jagged peaks rise abruptly from Jackson Hole valley.

• Key landscapes: Lake Coeur d'Alene, Bitterroot Mountains (MT), Madison River Valley, Yellowstone caldera, Teton Range, Wind River Range.
• Local commerce thrives in Jackson Hole (art galleries and upscale boutiques) and Butte (historic mining district).
• Support local: buy huckleberry products in Montana, buffalo jerky in Wyoming.

Hidden Off-Route Spots

Detour 10 miles north of Missoula to the National Bison Range (open May-October) in Moiese, where herds roam on 18,500 acres. Near Dubois, WY, visit Tie Hack Historical Monument, a memorial to tie-hack loggers who supplied railroad ties to the Union Pacific.

• Bubba's Bar-B-Que in Butte (historic downtown) for Montana-style ribs.
• Moose-Wilson Road (dirt) between Grand Teton and Jackson for wildlife viewing.