Jeffersonville to Clarksville: A Road Trip Guide

This route begins at the Falls of the Ohio, where the river drops 26 feet over a fossil-laden Devonian limestone shelf—the only such exposure on the entire Ohio River. This geological quirk once forced riverboat traffic to portage, making Jeffersonville a bustling shipbuilding hub in the 19th century.

The drive covers about 170 miles via I-65 South, passing through Louisville's southern suburbs, the rolling hills of Kentucky's Pennyrile region, and ending at Clarksville, Tennessee, just across the state line. It's a journey that intertwines river history with inland commerce.

The most direct path is I-65 South, a well-maintained four-lane interstate. As of 2025, the average fuel price is $3.20/gal; with most vehicles achieving 25-30 mpg, expect to spend around $18-22 in fuel. Toll roads are not present on this route.

Road quality is generally good, though construction zones are common near Louisville and Elizabethtown. Use real-time traffic apps to avoid delays. Rest areas with picnic tables and vending machines appear every 30-50 miles, ideal for short breaks.

• Nearest major airports: Louisville Muhammad Ali International (SDF) and Nashville International (BNA).
• Interstate exits: Exit 0 in Jeffersonville, Exit 11 in Clarksville.

I-65 is a heavily traveled corridor, and in 2023, the Kentucky section had a fatality rate of 1.1 per 100 million vehicle miles, slightly above the national average. Drive defensively, especially during peak holiday weekends. The route is pet-friendly, with most rest areas having designated dog-walking areas; many hotels along the corridor welcome pets, but check policies in advance.

For families, the drive is manageable, but plan breaks. The Kentucky Down Under in Horse Cave offers cave tours and wildlife encounters, while Beech Bend Park in Bowling Green combines a small theme park with a water park. For outdoor fun, the aforementioned Nolin Lake has hiking trails and swimming beaches.

Fatigue management is crucial. Aim to stop every 2 hours or 100 miles. The rest areas at mile markers 91 and 170 are particularly well-maintained. If you're looking for off-route gems, consider the Hidden River Cave in Horse Cave or a short detour to the National Corvette Museum in Bowling Green—a shrine to America's sports car.

For more on optimizing your trip, check out how to find the best stops and hidden gems between cities.

South of Louisville, the terrain shifts to the karst topography of the Pennyrile—limestone bedrock riddled with caves and sinkholes. This region is home to the nation's longest known cave system, Mammoth Cave National Park, located about 30 miles off I-65 at Cave City. While not a UNESCO site itself, the park is associated with the broader Cave Region, which is listed on the U.S. Tentative List for World Heritage status.

For a scenic detour, take KY 70 east at Mammoth Cave to visit the Nolin River Lake, a 5,795-acre reservoir popular for fishing and boating. Locally, small towns like Horse Cave and Glasgow offer antique shops and country diners that serve as authentic rest stops.

The culinary infrastructure includes a mix of fast-food chains and regional BBQ joints. In Bowling Green, try a hot brown—a Louisville-origin open-faced turkey sandwich—at a classic diner. For coffee, local roasters in Elizabethtown have drive-through windows that cater to travelers.