Memphis to Dubuque: Mississippi River Road Trip Guide

This 550-mile route from Memphis, TN to Dubuque, IA follows the Great River Road (National Scenic Byway) along the Mississippi River. The journey takes approximately 9 hours of driving time without stops, but you'll want to allow 2-3 days to explore.

The route crosses three states: Tennessee, Missouri, and Iowa. A little-known fact: the Mississippi River actually flows north to south, but between Memphis and Dubuque you'll gain 500 feet in elevation—the river drops, but the terrain rises.

Key highways: I-55 from Memphis to St. Louis, then US-67 north to Davenport, and finally US-52/US-61 to Dubuque. For the scenic route, take the Great River Road (Hwy 79 in Missouri, Hwy 35 in Iowa) alongside the river—adds 2 hours but offers stunning views.

Fuel stations are abundant along interstates, but sparse on rural Great River Road sections. Fill up in major towns: Memphis, Cape Girardeau, St. Louis, Hannibal, Quincy, Davenport, Dubuque. Average gas prices range from $3.20 to $3.60 per gallon (2025).

Road conditions: interstates (I-55, I-70) are excellent; secondary highways vary from good to fair. Watch for occasional flooding on River Road after heavy rains. The route is suitable for all vehicles, but RVs should avoid narrow river bluffs near Hannibal.

Tolls: none on this route. Camping options: numerous state parks with RV hookups. Motels and hotels available in all towns mentioned. For how to find the best stops and hidden gems between cities, use Wayro's dynamic stop planner.

The route showcases the Mississippi River Valley's diverse landscapes: from the flat delta near Memphis to the rolling hills of the Driftless Area in Iowa. Must-see natural attractions include the Trail of Tears State Park in Missouri, where you can hike to a 300-foot observation deck with river views.

• Cahokia Mounds State Historic Site (Collinsville, IL): ancient Native American city, UNESCO World Heritage Site candidate, just east of St. Louis
• Effigy Mounds National Monument (Harpers Ferry, IA): prehistoric animal-shaped mounds, 30 miles south of Dubuque
• Maquoketa Caves State Park (Iowa): 15 caves to explore, 45 minutes from Dubuque

UNESCO World Heritage Sites near the route: only one—the Cahokia Mounds (listed 1982). It features Monk's Mound, the largest prehistoric earthwork in the Americas. Admission is free; interpretive center open daily.

Local commerce thrives in small river towns. Hannibal, MO (Mark Twain's birthplace) offers antique shops and riverboat tours. In Nauvoo, IL, sample locally made cheese and wine. Davenport has a vibrant arts district with galleries and brewpubs.

Road quality is generally good, but watch for deer especially at dawn/dusk in rural areas. Speed limits: 70 mph on interstates, 55-65 mph on US highways. Enjoy rest areas every 30-50 miles; the Missouri Welcome Center at I-55 south of St. Louis has clean facilities and free coffee.

Hidden off-route spots: Vicksburg National Military Park (MS) is 3 hours off-track, but skip it for Ste. Genevieve, MO, a French colonial village with historic houses and a winery. Also consider the Iowa 80 Truckstop (Walcott, IA) — the world's largest truck stop, with a museum and 24-hour diner, right off I-80.

Family-friendly stops: the St. Louis Zoo (free) and City Museum (Museum of Modern Art meets playground) are hits. In Dubuque, the National Mississippi River Museum & Aquarium ranks among the best river museums in the USA. Pet-friendly framework: most state parks allow leashed dogs; many hotels welcome pets. Fatigue management: plan stops every 2-3 hours; recommended breaks at rest areas or small towns like Canton, MO (population 2,500) with a scenic riverwalk.