Sheridan to Gillette Road Trip: A Detailed Wyoming Guide

The drive from Sheridan to Gillette follows Interstate 90 for approximately 120 miles, an easy 1 hour 45 minutes without stops. This segment of I-90 is the highest continuous stretch of interstate in North America, with elevations reaching over 6,500 feet near the Powder River Pass as you approach Buffalo. The route crosses the historic Bozeman Trail, a key pathway for gold seekers and settlers in the 1860s.

Is it worth driving Sheridan, WY to Gillette, WY? Absolutely, for the stunning mountain views, quiet prairie expanses, and surprising stops like the Fort Phil Kearny historic site. How long to drive Sheridan, WY to Gillette, WY? The main drive takes under two hours, but plan for extra time to explore the best stops Sheridan, WY to Gillette, WY.

Fuel stations are spaced every 20-30 miles along I-90, but the Kaycee area has only one gas station (Little Bear Gas). Fuel up in Buffalo or at the Flying J in Gillette to avoid empty stretches. Diesel and premium are available at most major stations. For EV charging, Sheridan has a few Level 2 chargers, and Gillette has Tesla Superchargers, but Buffalo and Kaycee lack fast-charging infrastructure.

Road quality on I-90 is excellent, with smooth asphalt and clear markings. However, the highway can be affected by snow and ice from October through April. The Powder River Pass area near mile marker 292 is particularly prone to high winds and reduced visibility. The Wyoming Department of Transportation (WYDOT) provides real-time road conditions via their 511 system.

• Sheridan: Full services, hospitals, and lodging.
• Buffaco: Restaurants, hotels, and a Walmart.
• Kaycee: One gas station, a small grocery store, no 24-hour services.
• Gillette: All services including major hospitals.

The first 30 miles from Sheridan to Buffalo wind through the foothills of the Bighorn Mountains, with sagebrush steppes and pine forests giving way to open prairie. The Powder River Basin begins near Kaycee, a vast, gently rolling landscape dotted with cattle ranches and coal mines. The skies seem larger here, and you can see for miles—a classic Wyoming tableau.

Things to do between Sheridan, WY and Gillette, WY include visiting the Fort Phil Kearny State Historic Site (exit 299), where the Fetterman Fight took place. The site has a visitor center with artifacts. Another stop is the Jim Gatchell Memorial Museum in Buffalo, offering a deep dive into Plains Indian history. Local commerce thrives on ranching and energy; you'll see wind turbines and coal trains alongside cattle.

• Bighorn National Forest: Access from Sheridan; scenic drives.
• Lake DeSmet: A reservoir near Buffalo, good for birdwatching.
• Hole-in-the-Wall Country: Outlaw hideout area near Kaycee.

Cell service is mostly available along I-90, but there are dead zones near the Powder River Pass and between Kaycee and Gillette. Download offline maps. Carry emergency supplies: water, blankets, first aid. Winter driving requires snow tires; summer brings potential for severe thunderstorms with hail. Wildlife, especially deer and antelope, cross the highway at dawn and dusk.

For families, the Deer Creek Stop in Buffalo (off exit 288) has a playground and picnic area. The Inn at the Bighorns in Buffalo offers a swimming pool. Children will enjoy the remains of the Fort Phil Kearny blockhouse. Pet-friendly stops include the Buffalo State Parks (pet policy varies; keep dogs leashed) and rest areas, such as the Lake DeSmet Rest Stop (south of I-90, no facilities but good for a quick walk).

• Rest areas: I-90 rest stops near mile markers 279 and 331 have restrooms and vending machines.
• Fatigue management: Break every 2 hours at a rest area or exit.
• Hidden off-route spot: Visit the ghost town of Teapot Rock near Kaycee (take County road 149; unpaved).

This journey across the high plains is a lesson in both natural beauty and prudent preparation. For more tips on discovering stops along any route, check out this guide on how to find the best stops and hidden gems between cities.