Cody to Cascade: Wyoming to Idaho Road Trip Guide

This route crosses the Continental Divide twice, passing through Yellowstone's west entrance and the Targhee National Forest. The drive covers roughly 350 miles (560 km) and takes about 6 hours without stops, but most travelers spend at least 2-3 days exploring.

In 1872, the US Congress designated Yellowstone as the world's first national park, forever changing tourism along this corridor. Today, the journey from Cody to Cascade threads volcanic plateaus, high desert plains, and lush river valleys.

Cody, WY sits at 5,086 ft elevation; Cascade, ID at 4,800 ft. The highest point on the route is Sylvan Pass (8,530 ft) in Yellowstone. For insights on crafting your own itinerary, see how to find the best stops and hidden gems between cities.

The primary highways are US-20/191/287 from Cody to Yellowstone, then ID-47 south to Ashton, followed by US-20 west to Cascade. The road is paved and well-maintained, but sections in Yellowstone can be narrow and winding.

Cell service is sporadic, especially in Yellowstone and the Targhee National Forest. Download offline maps before departure. Gas stations are available every 30-50 miles, but fill up in Cody or West Yellowstone.

• Recommended fuel stops: Cody (multiple stations), West Yellowstone (premium prices), Ashton, ID, and Cascade.
• Towing services: Available in Cody, West Yellowstone, and Ashton. Carry a spare tire.
• Restrooms: In national parks (fee or pass required), at visitor centers, and in small towns.

How long to drive Cody, WY to Cascade, ID? Without stops, it's about 6 hours. Most travelers break it into two days, spending a night in West Yellowstone or Ashton.

Yellowstone National Park dominates the first half. Features include the Grand Canyon of the Yellowstone, Old Faithful, and the Firehole River's thermal areas. The park sits on a dormant supervolcano, with over 10,000 geothermal features.

• Natural Landscapes & Attractions: Hayden Valley for wildlife, Mammoth Hot Springs terraces, and the Grand Prismatic Spring's rainbow colors.
• UNESCO World Heritage Sites: Yellowstone was designated in 1978. Its geothermal basins and protected ecosystem are globally unique.

After exiting Yellowstone's west gate, the landscape shifts to pine forests and ranchlands. The Targhee National Forest offers fishing and hiking. In Cascade, Lake Cascade State Park is a water recreation hub.

• Local Commerce & Culture: In Cody, the Buffalo Bill Center of the West and nightly rodeo (summer). West Yellowstone has the Grizzly & Wolf Discovery Center. Cascade's Main Street has a few diners and shops.

Is it worth driving Cody, WY to Cascade, ID? Absolutely for nature lovers. The variety from geysers to deep lake vistas is remarkable. Best stops Cody, WY to Cascade, ID include: Shoshone River Canyon, Buffalo Bill Dam, and Mesa Falls near Ashton.

The road is generally safe, but wildlife crossings are common—especially bison, elk, and deer. Speed limits are 45 mph in Yellowstone, 65 mph on highways. Winter travel (Oct-Apr) requires snow tires or chains; many park roads close.

• Infrastructure Safety & Road Quality: Surface is asphalt; potholes possible in spring. Shoulders are narrow in Yellowstone. Watch for cyclists.
• Family and Child Suitability: Yellowstone's geyser basins are wheelchair-accessible via boardwalks. Junior Ranger programs engage kids. Rest stops have basic facilities but no playgrounds.
• Pet-Friendly Framework: Pets are not allowed on trails or boardwalks in Yellowstone. They must be leashed in parking areas. Pet-friendly lodging is available in West Yellowstone and Ashton.

Fatigue Management & Rest Zones: Rest areas exist at the Yellowstone West Entrance and in Ashton. Take breaks every 2 hours. The drive through Yellowstone can be mentally taxing due to wildlife and traffic.

• Hidden Off-Route Spots: Mesa Falls Scenic Byway (ID-47) leads to Upper and Lower Mesa Falls, less crowded than Yellowstone's. In Island Park, hike to the Harriman State Park's alpine lakes.

Climatic Conditions & Route Aesthetics: Summer days are warm (70s-80s°F) but afternoons bring thunderstorms. Fall colors peak mid-September in Yellowstone. Winter is quiet but cold (0-20°F). Culinary Infrastructure: Cody has steak houses and breweries. West Yellowstone is touristy with pizza and burger joints. In Cascade, try the Cascade Grill for local trout.