Louisville to 30A covers about 620 miles and roughly 10 hours of driving, which makes it one of the more manageable drives to Seaside on this list — long, but doable in a single day if you're willing to leave early. It's also one of the simplest routes to navigate: you're on I-65 South for nearly the entire drive.
From Louisville, I-65 South runs through Elizabethtown, across the Tennessee line to Nashville, and on through Athens, Decatur and Cullman and Birmingham, Alabama. Near Montgomery, you'll leave I-65 for AL-55 South toward Andalusia and Florala, then pick up US-331 South for the final stretch into the Florida Panhandle and Seaside.
Because this route is almost entirely one interstate, the biggest slowdowns tend to be at the big-city interchanges — downtown Louisville's river bridges and Nashville's I-24/I-40/I-65 split — rather than anywhere rural. The one exception is the last hour or so on AL-55 and US-331, where services thin out considerably compared to the interstate miles that came before it.
Plan This Route with Rovo →No. I-65 was a toll road decades ago as the Kentucky Turnpike, but those tolls ended in 1975 — the entire route through Kentucky, Tennessee, and Alabama is free today, as is the AL-55/US-331 finish.
Yes, comfortably. At around 620 miles and 10 hours, this is one of the easier one-day drives to the beach on this list, especially with an early start.
The main risk points are downtown Louisville's Ohio River bridges and Nashville's I-24/I-40/I-65 interchange a couple hours later — leaving before 7am clears both before they build up.