Cody to Glenwood Springs Road Trip: Wyoming's Bighorn Basin to Colorado's Rockies

The route from Cody, Wyoming to Glenwood Springs, Colorado traverses roughly 500 miles along US-20, US-26, and I-80 before dropping south on CO-13 and I-70. This journey spans dramatic geological transitions: from the arid Bighorn Basin and the thermal anomalies of Yellowstone's eastern edge to the red-rock canyons of Utah's Dinosaur National Monument and the snow-capped peaks of the Colorado Rockies.

One little-known fact: the highway between Cody and Thermopolis passes through the heart of the Owl Creek Mountains, where the rock layers contain one of the world's most complete fossil records of prehistoric life, including the famous 'Cody dinosaur' unearthed in 1997. This stretch is also part of the ancient 'Oregon Trail' corridor.

The drive typically takes 8-10 hours without stops, but the best stops Cody, WY to Glenwood Springs, CO add at least two more days for a fulfilling experience. Many travelers wonder how to find the best stops and hidden gems between cities — this guide answers that with specific locations and detours.

The route includes several high-altitude passes (South Pass at 7,550 ft, Rabbit Ears Pass at 9,426 ft) where weather can change suddenly. Summer thunderstorms bring hail and lightning; winter requires snow tires or chains.

• Rest zones: Wind River Canyon Rest Area (mile 75), Point of Rocks Rest Area (I-80 mile 114), and the Colorado Welcome Center in Dinosaur, CO.
• Family stops: The 'World's Largest Greybull' statue in Greybull (photo op), the Hot Springs State Park free pool, and the Yampa River Botanic Park in Steamboat Springs (detour via US-40).
• Pet-friendly: Most rest areas allow dogs on leash. The Wyoming rest stops have designated pet exercise areas. In Glenwood Springs, the Sunlight Mountain Resort (10 miles off route) offers dog-friendly hiking.

Fatigue management: The Wyoming section (Cody to Rawlins) is monotonous after Thermopolis — take a break at the Shoshoni truck stop cafe. On I-70 near Glenwood Springs, the Glenwood Canyon drive is curvy but scenic; use cruise control and take the No Name exit (119) for a short walk to the Colorado River.

For is it worth driving Cody, WY to Glenwood Springs, CO — absolutely, if you love geology, hot springs, and small-town Western culture. The diversity from Wyoming's desert to Colorado's alpine forests makes this a top-tier road trip.

Leaving Cody, the landscape shifts from irrigated farmland to sagebrush steppe. The Wind River Canyon (mile marker 80 on US-20) is a 12-mile gorge carved through ancient basement rock, visible as you cross the Wind River multiple times. Pull over at the viewpoint to see the 'Wedding of the Waters' where the Wind River meets the Bighorn.

Thermopolis is home to the world's largest mineral hot spring, Hot Springs State Park, with free public bathing in the 'Big Spring' — a 104°F pool flowing into the Bighorn River. The town's name means 'Hot City' and the springs have been a draw for centuries.

• Must-see: Dinosaur Discovery Museum (Shoshoni) with over 2,000 fossils.
• Hidden gem: The ghost town of Atlantic City, 30 miles south of Lander via gravel roads (high-clearance recommended).
• Local product: Wyoming's 'Official State Cookie' — the huckleberry cookie, sold at Thermopolis bakeries.

UNESCO World Heritage Sites along this route: none directly on the road, but Yellowstone's Grand Prismatic (west of Cody) and Dinosaur National Monument (south of Craig) are both UNESCO-nominated. The Fremont Indian petroglyphs in Wind River Canyon are a protected archaeological site.

The things to do between Cody, WY and Glenwood Springs, CO naturally cluster around the Wind River Range, the Sierra Madre, and the Flattops — all offering hiking, fishing, and photography.

Fuel stations become sparse after Thermopolis — the next reliable stops are in Shoshoni (40 miles) and then Rawlins (100 miles further). Always fill up when below half-tank. Diesel and premium gas are available at all major towns but less common in rural stretches.

• Average fuel cost: $3.50/gal (WY) to $3.80/gal (CO) as of 2025.
• Road conditions: US-20 is well-paved but winding through the Owl Creeks; I-80 is smooth interstate; CO-13 is two-lane with occasional construction.
• Cell service: Reliable on I-80 and near towns, but gaps exist in Wind River Canyon and between Rawlins and Craig.

For those asking how long to drive Cody, WY to Glenwood Springs, CO, the nonstop time is about 9 hours. However, factoring in sightseeing, meals, and rest stops, plan for two full days. The best approach is to break the drive into thirds with overnight stays in Thermopolis or Rawlins.