Leave Lexington, KY by about 12:15 PM and take I-75 South to I-65 South toward Hodgenville; it’s roughly 1 hour 45 minutes to Abraham Lincoln Birthplace National Historical Park, and that timing works well for a family day because you’ll miss the worst of the lunch rush and arrive with enough daylight to enjoy the stop. The parking at the visitor area is easy and free, and in July you’ll want water in the car, sunglasses, and a little patience for summer heat and humidity. If you need a quick leg-stretch before the historic stop, this is the kind of drive where a gas-and-bathroom break in Elizabethtown can save you from feeling rushed later.
At Abraham Lincoln Birthplace National Historical Park, plan about 1 to 1.5 hours for the memorial building, the short trails, and the visitor area. The main memorial usually opens daily, and the whole site is an easy family stop: stroller-friendly in parts, not strenuous, and perfect for kids who need something interesting without a long hike. After that, head a couple minutes into Hodgenville for a casual lunch downtown at The Lincoln Museum & Deli-type local spots or a dependable small-town cafe like The Kitchen Table or Bucky’s if it’s open when you pass through; expect $12–20 per person and about 45 minutes so you can keep the day moving.
From Hodgenville, continue south on I-65 and local roads to Mammoth Cave National Park; it’s usually about 1 hour 10 minutes to 1 hour 25 minutes depending on traffic, and even if you’re not taking a cave tour, the surface area alone is worth the stop. Spend 2 to 3 hours around the visitor center, the historic entrance area, and a short easy walk like the River Styx Spring Trail or the area near Mammoth Cave Visitor Center—just be aware that actual cave tours often sell out, so if you want one, book ahead online. For dinner, a family-friendly option in Cave City like Dumplin’s or El Mazatlan works well for a quick, unfussy meal; budget $15–25 per person and get everyone fed before the last stretch.
Leave Cave City around 6:30–7:00 PM and follow I-65 South straight to Nashville, TN; the drive is typically 2 hours 15 minutes to 2 hours 45 minutes, with the usual possibility of slower traffic as you approach the city. If you’re arriving at night, hotel parking is generally straightforward compared with downtown street parking, so this is a good leg to finish without extra stops. If everyone’s still alert and you want one last easy break near the route, a quick fuel stop around Bowling Green is the cleanest place to do it before rolling into Nashville.