Knoxville to Ann Arbor: Ultimate Road Trip Guide

Driving north on I-75 from Knoxville, you cross the 36th parallel near Jellico, Tennessee—a line that historically divided the Union and Confederacy. The transition is abrupt: one minute you’re in the rolling hills of the South, the next you’re entering the Appalachian foothills where the dialects shift and barbecue styles change.

This 9- to 10-hour drive spans roughly 625 miles, passing through four states: Tennessee, Kentucky, Ohio, and Michigan. The route is a study in contrasts—from the smoky mountains to the industrial heartland. For more on uncovering hidden gems along the way, check out how to find the best stops and hidden gems between cities.

Departing Knoxville, you’re flanked by the Great Smoky Mountains; as you head north, the terrain opens into Kentucky’s Bluegrass region—gentle horse farms and limestone fences. Ohio introduces flat agricultural plains, then the industrial corridor.

• Natural highlights: Daniel Boone National Forest (KY), Cave Run Lake (KY), and the Maumee River in Toledo.
• UNESCO sites: None directly on route, but nearby Mammoth Cave National Park (KY) and the Scranton Flats (Cincinnati) are notable.

Local commerce thrives at farmers markets: Lexington’s Saturday Market (June–Oct) and Ann Arbor’s Kerrytown Market. Antique stores line US-27 in Kentucky; look for the “Antique Alley” signs.

Culinary infrastructure is robust: from Tennessee’s pulled pork to Michigan’s Coney dogs. Must-try stops: Papaw's BBQ (London, KY), Skyline Chili (Cincinnati), and Zingerman’s Deli (Ann Arbor).

The primary route is I-75 North, a well-maintained, multi-lane highway. Expect toll-free travel except for a small segment near Cincinnati. Fuel costs are moderate: as of 2025, average gas price across the route is $3.29/gallon.

• Best fuel stops: London, KY (exit 41) has multiple stations with competitive prices.
• Rest areas: Kentucky has 14 rest stops with clean facilities; Ohio’s are known for ample parking.
• Electric vehicle charging: Electrify America stations in Lexington and Dayton.

Estimates: Knoxville to Ann Arbor is best done in two driving days, but many complete it in one with two drivers. The answer to “how long to drive Knoxville, TN to Ann Arbor, MI” is typically 8.5–10 hours nonstop. Consider breaking at Cincinnati or Lexington for a night.

Is it worth driving? Absolutely—the journey offers diverse landscapes, culinary stops, and cultural landmarks that flying misses.

Road quality is excellent; I-75 is a federal highway with well-marked exits. Construction zones are common in Ohio—check ODOT updates. Winter driving (Nov–March) requires caution near Toledo where lake-effect snow hits.

• Family-friendly stops: Cincinnati Zoo & Botanical Garden, The Creation Museum (Petersburg, KY), and the Henry Ford Museum (Dearborn, MI).
• Pet-friendly framework: Most rest areas allow leashed pets; designated pet relief areas exist every 30–50 miles.

Fatigue management is critical for the 9-hour drive. Plan rest breaks every 2 hours: recommended rest zones include Jellico Welcome Center (TN exit 160), Berea Rest Area (KY exit 76), and Sidney Rest Area (OH exit 92). Consider an overnight stop at Dayton or Lexington to split the drive.

Hidden off-route spots: Visit the Shaker Village at Pleasant Hill (KY, off US-68) or the Serpent Mound (OH, off SR-73). These add 30–60 minutes but reward with unique history.