Interstate 65: Elizabethtown to Bowling Green, Kentucky

🚙 Drive America’s Highways for 53 miles south along Interstate 65 from the Western Kentucky Parkway in Elizabethtown to Smiths Grove near Bowling Green, Kentucky, traveling through rolling farmland, small communities, and the limestone cave country that defines much of south-central Kentucky.

We begin on the southern side of Elizabethtown at I-65 Exit 91, where Interstate 65 meets the Wendell H. Ford Western Kentucky Parkway before turning our attention south toward Bowling Green. The parkway reaches its eastern end here after crossing western Kentucky, making this interchange an important transition point between the east-west parkway system and Kentucky’s principal north-south Interstate corridor. Almost immediately, the suburban edges of Elizabethtown begin falling away behind us. Commercial development becomes less continuous, wooded ridges press closer to the roadway, and broad fields open between stands of trees as I-65 settles into the rural landscape of Hardin County. This first portion of our Elizabethtown to Bowling Green drive quickly establishes the character that will remain with us for much of the next 53 miles: a busy Interstate carrying long-distance traffic through countryside that still feels distinctly agricultural.

South of Elizabethtown, we pass the Glendale area before reaching Sonora at Exit 81, where KY-84 provides access toward the community and nearby U.S. 31W. A few miles farther south, I-65 enters the Upton area at Exit 76. Farms, pastureland, barns, wooded hollows, and scattered rural homes dominate the surrounding scenery, with U.S. 31W roughly paralleling the Interstate through much of the corridor. That older highway once carried the through traffic that now moves at Interstate speeds on I-65, and the towns strung along 31W offer a reminder that this north-south transportation route existed long before the modern freeway. As we continue south, the terrain begins to feel somewhat more broken and enclosed, with wooded slopes alternating with cultivated land and open pasture.

Around Munfordville, reached from Exit 65, we enter Hart County and begin moving into the region most strongly associated with Kentucky’s famous cave country. On the surface, the scenery remains deceptively ordinary: rolling fields, forest, occasional rock cuts, local roads, and the familiar pattern of Interstate interchanges. Beneath that surface, however, water has spent immense spans of time working through layers of soluble limestone, creating sinkholes, underground drainage systems, passages, and caverns. The result is the karst landscape for which this portion of Kentucky is internationally known. It is one of those stretches of highway where some of the most remarkable geography is largely invisible from the windshield, hidden directly beneath the farmland and woods beside us.

Continuing south, we pass Horse Cave, served by Exit 58, and then approach Cave City at Exit 53. Here the relationship between I-65 and the region’s underground landscape becomes much more obvious. Cave City has long served travelers visiting the area’s cave attractions, and Exit 53 is also the primary approach to Mammoth Cave National Park for southbound motorists. The National Park Service directs visitors arriving from the north to leave I-65 here and follow KY-70 toward the park. Mammoth Cave is the centerpiece of a much larger karst region, and its enormous underground network developed as water gradually dissolved and drained through the underlying limestone. Yet from I-65 itself, the cave country remains understated. Rather than dramatic mountains or exposed canyon walls, we see green fields and thick woodland sitting atop a hidden landscape of passages, shafts, underground streams, and sinkholes.

Just five miles farther south, Park City at Exit 48 provides another gateway into Mammoth Cave National Park. Motorists approaching from the south are directed through this interchange along KY-255, while the Cave City approach serves traffic coming from the north. Historically, these communities grew around transportation and tourism routes serving the cave region, and I-65 now forms the major modern spine connecting them with Louisville to the north and Nashville to the south. As we pass Park City, the concentration of cave-country destinations begins to recede behind us, though the underlying karst geology continues well beyond the tourist signs and Interstate exits.

From Park City, I-65 carries us into northern Warren County. Farmland again becomes one of the dominant features of the drive, broken by patches of woodland, scattered development, and the increasingly frequent signs of the Bowling Green region ahead. The Interstate remains unmistakably rural through most of this final stretch. Rather than entering Bowling Green proper, however, our drive concludes at Smiths Grove and Exit 38, where KY-101 meets I-65 roughly 10 Interstate miles south of Park City. Exit 38 serves Smiths Grove and marks the end of our 53-mile journey from Elizabethtown. Bowling Green lies farther south, where I-65 eventually encounters a much more developed urban corridor before continuing toward Franklin, the Tennessee state line, and Nashville.

This stretch of Interstate 65 may be one of Kentucky’s major transportation arteries, but the landscape surrounding it tells a quieter story. Between Elizabethtown and Smiths Grove, we move from the edge of a regional city into farmland and wooded countryside, pass communities that grew along older north-south roads, and cross one of the most geologically distinctive regions in the United States. Much of what makes the drive memorable is hidden rather than obvious: beneath ordinary-looking farms and forests lies the vast limestone world of Kentucky cave country. By the time we reach Smiths Grove, I-65 has carried us through more than 50 miles of that changing landscape while steadily drawing us closer to Bowling Green and the southern edge of the Commonwealth.

Music featured in this video may be available from The Open Road Collective: