Polson to Green River: Scenic Drive Guide

The drive from Polson, Montana to Green River, Wyoming spans roughly 570 miles, crossing the Continental Divide twice and descending from the Flathead Lake region into the high desert of the Green River Basin. You'll follow U.S. Route 93 south to Interstate 90 east, then U.S. Route 287 south to Interstate 80 west. The route offers dramatic shifts in elevation, from 2,900 feet in Polson to over 7,000 feet at South Pass, and showcases the transition from pine forests to sagebrush steppe.

This guide provides comprehensive information on how long to drive, best stops, and what to expect, helping you decide if it's worth driving from Polson to Green River and what to do in between. We've organized the essentials into four sections: logistics, landscapes, safety, and family considerations.

The route is safe, but winter conditions can be challenging; check forecasts and carry chains. For families, the route is suitable with kids, with opportunities to stretch legs at the Buffalo Bill Center of the West in Cody (a bit off-route) or the Wyoming Dinosaur Center in Thermopolis. Pets are generally allowed at rest areas and most motels, but national parks may have restrictions; keep them on a leash. To manage fatigue, plan stops every two hours or 100 miles—good spots include Anaconda, Whitehall, and Alcova. For local commerce, try small-town diners in Jackson (if you detour) or the Wind River Casino in Riverton.

For more ideas on uncovering less-known places, refer to how to find the best stops and hidden gems between cities. In summary, this drive is worth it for its varied scenery and historical sites, with plenty of things to do between Polson and Green River.

Driving from Polson to Green River typically takes 10-11 hours without stops, covering about 570 miles. The route is well-maintained, with interstate highways for the majority: I-90 from Butte to Buffalo, then US-287 south through Wyoming to Rawlins, and finally I-80 west to Green River. Expect to spend around $75 on fuel, given an average vehicle. Plan for overnight stays if you're not driving straight through, with major towns like Butte, Buffalo, and Rawlins offering full services.

• Major fuel stations every 50-100 miles along interstates; fewer on US-287.
• Cell coverage is intermittent in mountain passes but reliable in towns.
• No tolls on this route.
• Travel time can increase in winter due to snow and wind.

As you leave Polson, the Mission Mountains rise to the east, and you'll skirt the southern end of Flathead Lake, the largest natural freshwater lake in the western U.S. by surface area. The route passes near the National Bison Range, a wildlife refuge established in 1908, where you might spot bison, elk, and pronghorn. Further south, Butte is a historic mining town, home to the Berkeley Pit, a former open-pit copper mine now a Superfund site. The Continental Divide is crossed at Homestake Pass, at 6,329 feet, offering panoramic views.

In Wyoming, you'll traverse the Wind River Canyon, a deep granite gorge with scenic pullouts. The town of Dubois is a small gateway to the Wind River Indian Reservation, where you can learn about Eastern Shoshone and Northern Arapaho culture. As you approach Green River, the landscape becomes arid, with rock formations and buttes typical of the Colorado Plateau. For hidden off-route spots, consider a detour to the hot springs at Thermopolis, home to the world's largest mineral hot spring, or the Oregon Trail ruts near Guernsey, a visible slice of pioneer history.