Taos to Spearfish Road Trip: High Plains to Black Hills

This route from Taos, New Mexico to Spearfish, South Dakota traces the 715-mile spine of the High Plains and Black Hills, passing through Colorado and Wyoming. A little-known fact: the route crosses the Continental Divide at 7,240 feet near Douglas, Wyoming, just east of the Medicine Bow Mountains.

Drivers take I-25 north from the Rio Grande Valley, then connect to US-85/US-18 at Orin Junction, winding through cattle ranches and red rock canyons before descending into the Ponderosa pine forests of the Black Hills. The drive takes about 11 hours without stops, but plan for 2-3 days to absorb the landscapes.

To answer how long to drive Taos, NM to Spearfish, SD: the quickest route is via I-25 north through Denver, then US-85/US-18 north through Wyoming. Total time is about 10 hours 45 minutes with light traffic, but add time for stops.

Fuel stations are plentiful along I-25 in Colorado and Wyoming, but become sparse between Wheatland and Lusk (about 80 miles). You should top off in Wheatland, WY. Spearfish has a major exit off I-90 with gas stations open 24/7.

The route is mostly interstate-grade highway (I-25, I-90) with one 40-mile section of two-lane US-85 through Wyoming ranch country. Road surfaces are generally good, but watch for frost heaves in spring and snow from October to April.

• Best fuel stops: Taos (lowest NM prices), Wheatland (cheaper than Lusk), Spearfish (competitive)
• Average gas cost: $45 for a sedan (11 gallons at ~$4/gal)
• Tolls: None on this route

Winter driving conditions prevail from November to March, especially over Raton Pass and near Lusk, WY. I-25 can close due to blizzards; check CDOT and WYDOT alerts. Summer storms bring sudden downpours and hail on the plains.

For family suitability, the drive includes kid-friendly attractions like the Terry Bison Ranch (exit 1, WY) where you can feed bison from a train, and the Journey Museum in Rapid City (30 min from Spearfish) for interactive exhibits.

Pet-friendly stops are ample: rest areas with off-leash fields exist at Cheyenne (I-25 south of town) and near Lusk (US-85). Many hotels in Spearfish allow pets with deposits. Plan rest stops every 2 hours – good options: the Welcome Center at the CO-WY border, and the Douglas Highway Rest Area.

• Best stops Taos, NM to Spearfish, SD: Santa Fe (detour for art galleries), Trinidad (historic downtown), Cheyenne (Frontier Days museum), Lusk (Cowbelle Cafe for pie), Spearfish City Park.
• Fatigue management: Take US-85 north of Lusk at your own risk – no services for 80 miles. Carry water and snacks. The best rest area is at Sunset Hill (mile marker 92 on I-90) with views of the Black Hills.

The journey passes three distinct biomes. From Taos to Raton Pass (7,834 ft), you climb through piñon-juniper woodlands. The Sangre de Cristo Mountains provide a dramatic backdrop of 13,000-foot peaks.

Near Trinidad, Colorado, the landscape flattens into shortgrass prairie. This is cattle ranching country, with occasional buttes and mesas. The route passes within 20 miles of the Santa Fe Trail's mountain branch, marked by the Santa Fe Trail National Scenic Byway.

In northeastern Wyoming, the terrain rises into the Black Hills – a 40-mile-wide uplift of granite and limestone capped with Ponderosa pines. Spearfish Canyon, a deep limestone gorge, features 200-foot waterfalls (Bridal Veil Falls) and is often how to find the best stops and hidden gems between cities.

• UNESCO Site: None directly on route, but Taos Pueblo (45 min from start) is a World Heritage site and worth a detour.
• Hidden off-route spot: Agate Fossil Beds National Monument (just east of US-85 near Harrison, NE) has Miocene mammal fossils and a fascinating paleontology museum.