Cedar City to Kemmerer: Ultimate Road Trip Guide

Driving from Cedar City, UT to Kemmerer, WY covers roughly 300 miles along I-15 N and US-30, taking about 4.5 hours without stops. This route passes through the historic Parowan Gap, where Native American petroglyphs date back over 1,000 years — a precise cultural landmark few travelers notice.

The journey transitions from red rock canyons of southern Utah to the high desert plains of Wyoming, offering dramatic landscape shifts. Fuel stations are sparse past Beaver, so plan accordingly. For tips on unearthing hidden gems, see how to find the best stops and hidden gems between cities.

Key milestones: Cedar City (mile 0) → Beaver (20 mi) → Fillmore (50 mi) → Nephi (100 mi) → Spanish Fork (150 mi) → Salt Lake City (200 mi) → Evanston (260 mi) → Kemmerer (300 mi). The most scenic stretch is between Nephi and Spanish Fork, where the Wasatch Range rises starkly.

This guide answers how long to drive Cedar City, UT to Kemmerer, WY and is it worth driving, while detailing best stops and things to do along the way.

The first hour reveals the Dixie National Forest and the Markagunt Plateau, where lava flows from 1,000-year-old eruptions create black cinder cones near Parowan. At mile 15, detour east for 5 minutes to Parowan Gap, a natural pass with over 90 petroglyph panels — a UNESCO-adjacent site (not UNESCO itself, but listed on the National Register).

• Kodachrome Basin State Park (detour 1 hr south from Cedar City): named for its vibrant rock chimneys.
• Fishlake National Forest (adjacent to I-15 near Beaver): home of Pando, the world’s largest aspen clone.
• San Rafael Swell (far detour): a massive geological dome, but not practical for this trip.

Near Scipio, the landscape opens into the Sevier Desert—a sagebrush steppe with isolated volcanic buttes. This area was a Pony Express route in the 1860s. Local commerce: Fillmore (state capital from 1851–1856) has a pioneer museum; Nephi boasts the historic Salt Creek Canyon.

As you approach Utah Lake near Spanish Fork, the urban corridor begins. Provo offers Brigham Young University and the Squaw Peak trail. SLC’s skyline features the Wasatch Front; stop at the Natural History Museum of Utah for a quick geologic overview.

Beyond SLC, I-80 climbs to Parleys Summit (7,000 ft), then drops into the coal-mining region of Summit County. Evanston, WY, has a downtown historic district with 19th-century sandstone buildings. The final stretch on US-30 crosses the Bear River Divide (7,450 ft) before descending into Kemmerer’s Fossil Butte National Monument, home to the famous 50-million-year-old fish fossils.

• Fossil Butte is a UNESCO World Heritage site (part of the “Geologic Heritage” list) — free to visit, open year-round.
• Kemmerer is known as “the fossil fish capital of the world” and hosts the J.C. Penney Mother Store (the original).

I-15 N is well-maintained with 70–80 mph speed limits, but watch for construction near Nephi. From Spanish Fork, US-189 merges briefly before I-80 E to Evanston, then US-30 N to Kemmerer. The final 35 miles are two-lane roads with occasional cattle crossings.

• Gas stations: Major clusters in Cedar City, Beaver, Fillmore, Nephi, Spanish Fork, SLC, Evanston. Fill up in SLC; prices rise in Evanston. Average cost per gallon: Utah $3.50, Wyoming $3.40.
• Restrooms: Rest areas at mile 158 (Scipio) and mile 258 (Evanston). Fast food in all towns.
• EV charging: Level 2 chargers in Fillmore and Nephi; Superchargers in SLC.

Toll roads: None on the main route. However, US-30 has a seasonal weight restriction in spring. Overheight vehicles (13 ft+) may need an alternate. Check UDOT cameras before departure.

Best time to drive: April–October for clear roads; winter requires snow tires (especially Parleys Canyon near SLC). Summer temps: 90°F in Utah, 80°F in Wyoming. See climatic conditions later.

I-15 is a high-speed truck corridor; maintain a safe following distance. Watch for deer at dawn/dusk, especially near Fillmore and Evanston. Cell reception is spotty between Beaver and Nephi (about 30 miles of no signal). Download offline maps.

• Family stops: Fillmore’s Territorial Statehouse State Park (kids’ interactive exhibits) and Nephi’s City Park with playgrounds.
• SLC’s Discovery Gateway Children’s Museum (downtown) is a 1-hour detour off I-15.
• Evanston’s Bear River State Park has a bison herd and walking trails.

Pet-friendly framework: Most rest stops have pet areas. In SLC, the Memory Grove Park (fenced) is ideal. In Evanston, the Historic Roundhouse & Depot has a pet-friendly lawn. Kemmerer allows dogs at Fossil Butte on leash.

Fatigue management: Plan stops every 90 minutes. The Scipio rest area (mile 158) has picnic tables and vending machines. Beaver’s Main Street has a Sonic Drive-In for quick snacks. Best lunch: Spanish Fork’s Granny’s Cafe (homestyle pies). For caffeine: Fillmore’s Coffee Hub (roast beans locally).

Road quality: I-15 is excellent except for potholes between Nephi and Santaquin after winter. US-30 from Evanston to Kemmerer has occasional frost heaves in spring. Use low beams in fog near Parleys Canyon.