Hatch to Kemmerer: Utah Scenic Byway to Wyoming Fossil Country

The route from Hatch, Utah to Kemmerer, Wyoming covers roughly 280 miles along US-89 and I-80, crossing three distinct geological provinces. Near Hatch, the road skirts Fishlake National Forest, home to Pando, a 106-acre clonal quaking aspen colony estimated at 80,000 years old—one of the oldest living organisms on Earth. This single genetic individual, also called the Trembling Giant, weighs over 6 million kilograms and anchors the western edge of the Colorado Plateau.

As you head northeast, the landscape shifts from red-rock canyons to sagebrush steppe before climbing into the Wasatch Range near Evanston, Wyoming. The final 50 miles across the Wyoming Basin reveal an entirely different world: the Green River Formation, a sedimentary archive of Eocene fossils. Kemmerer sits atop this formation, where quarrying yields perfectly preserved 50-million-year-old freshwater fish. This drive is a transect through deep time and living natural wonders.

Overview

• Total distance: ~280 miles (451 km)
• Estimated drive time: 4.5 hours without stops; 6-8 hours with key detours
• Major highways: US-89 (scenic), I-80 (interstate), US-189 (connector)
• Key towns: Hatch (start), Junction, UT (turn-off), Evanston, WY (midpoint), Kemmerer (end)

The greatest safety concerns on this route are wildlife crossings and fatigue. Deer and elk frequent the US-89 and US-189 corridors at dawn and dusk. On I-80, nighttime driving reduces vision over the long straightaways. Recommended rest zones: the Cove Fort Historic Site (restrooms, picnic tables, 24-hour gas) at the I-15/US-89 junction, and the Evanston WYDOT Rest Area (clean, pet-friendly, interpretive kiosk).

• Infrastructure: US-89 is two-lane with frequent passing lanes; I-80 is four-lane divided. No tolls.
• Pet-friendly: Almost all rest areas allow leashed pets. Fishlake National Forest and Fossil Butte National Monument permit dogs on trails.
• Family suitability: Children will love the fossil quarries (hands-on digging) and the Pando grove (easy walk). The J.C. Penney Museum has interactive exhibits.

Fatigue management: Drive no more than three hours between significant stops. The best midway break is Evanston, where the City Park offers shaded benches and a playground. For culinary infrastructure, options are limited: in Hatch, the Hitch’n Post serves green chile cheeseburgers; in Loa, Java Joe's Coffee (espresso and pastries) is a safe caffeine stop; in Kemmerer, the El Rancho Steakhouse serves Wyoming beef and local craft beer. Avoid filling up on heavy meals before the I-80 section, as drowsiness sets in quickly on monotonous highway.

For hidden off-route spots: from US-189, take the 12-mile gravel road to the Red Creek Reservoir (fishing, swimming, no crowds). From I-80 at exit 34 (Evanston), head south 20 miles to the historic Bear River City ghost town and its preserved 1880s schoolhouse.

The drive follows a clear two-phase pattern: a scenic two-lane highway (US-89 and US-189) through national forests, then a short interstate segment (I-80) across the high desert. Cell service is reliable on I-80 but spotty on US-89 between Hatch and Panguitch. Fuel stations are sparse: fill up in Hatch (last cheap gas for 80 miles) or at the Chevron in Junction (UT-20 junction). After Junction, the next reliable fuel is in Loa (40 miles) or off I-80 at Evanston.

• Fuel costs: Hatch gas averages $3.50/gal; Evanston is often $0.20 cheaper due to Wyoming taxes.
• Best restrooms: The Pando trailhead pit toilets (seasonal), Loa City Park (clean flush toilets), Evanston Travel Center (24/7).
• Road conditions: US-89 is well-paved but winding; snow possible October-May. Check UDOT and WYDOT alerts.

For planning the best stops, consult how to find the best stops and hidden gems between cities. Consider a short detour to Pando’s viewing platform (0.3-mile paved trail) or the Fishlake National Forest Visitor Center in Loa. After Junction, US-189 climbs through the Wasatch-Cache National Forest, with several pull-offs for panoramic views of the Sevier River canyon. The final I-80 leg is flat and exposed; strong crosswinds frequently affect high-profile vehicles.

The first 50 miles out of Hatch hug the eastern flank of the Paunsaugunt Plateau, where gray limestone cliffs alternate with juniper-dotted hills. Near Panguitch (15 miles north), look for the historic Panguitch Quilt Walk memorial. The road then turns northeast past the Sevier River into Fishlake Basin. Pando itself sits at 8,800 feet; the grove’s fall color (mid-September to early October) is a must-see. The Fishlake National Forest offers dispersed camping and fishing in small alpine lakes.

• Natural highlight: Pando aspen grove (off UT-25, 8 miles east of Richfield turnoff).
• Geology: The transition from Navajo Sandstone (Jurassic) to the Wasatch Formation (Eocene) occurs between Salina and Fort Bridger.
• Local commerce: In Loa, the Wayne County Visitor Center sells local honey and pinyon nuts. Kemmerer has the historic J.C. Penney Mother Store, with original 1902 merchandise displays.

UNESCO World Heritage Sites are not on this route, but the nearby Dinosaur National Monument (2.5 hours north of Kemmerer) is a candidate. However, Kemmerer’s own Fossil Butte National Monument qualifies as a National Natural Landmark. The Green River Formation there contains the world’s most abundant freshwater fish fossils, including the 6-foot-long Diplomystus. Quarrying is allowed for a fee at private fossil sites like Fossil Safari. This area also marks the western edge of the Wyoming Green River Basin, a major natural gas field.

For a hidden off-route spot: take County Road 340 from Kemmerer 10 miles east to the abandoned town of Fontenelle, an early 1900s railroad ghost town with surviving log cabins and a cemetery.