Plan with Rovo. Drive with your favorite map.
The drive from St. Louis to 30A runs close to 750 miles and takes around 12 hours behind the wheel, making it one of the longer hauls to Seaside on this list — solidly two-driver or overnight-stop territory. It also spends more time on newer, lower-traffic highways than routes further east, which cuts down on big-city delays but means fewer big travel plazas once you're past Memphis.
Most St. Louis drivers head south on I-55 through southeast Missouri and into Memphis, then pick up I-22 East across northern Mississippi to Birmingham, Alabama. From Birmingham, I-65 South carries you to Montgomery, where you leave the interstate system for good — cutting over to AL-55 and then US-331 South for the final two-lane run through Opp and Florala into the Florida Panhandle.
The stretch from Birmingham down through Montgomery is easy interstate driving, but once you leave I-65 for AL-55 and US-331 near Troy and Opp, you're on two-lane roads with real gaps between fuel stops. Filling up in Montgomery before you cut over, and again in DeFuniak Springs before the final 30-mile push, is the simplest way to avoid getting caught low.
Plan This Route with Rovo →No — this is a toll-free route start to finish. Missouri eliminated its remaining toll facilities in 2024, and I-55, I-22, I-65, and US-331 are all free the whole way down.
It's possible — 12 hours is a long but realistic single push if you leave at dawn and keep stops short. Most families with kids find it easier to break it up, usually around Birmingham or Montgomery, Alabama.
Clearing the I-55/I-44 interchange before 7am avoids St. Louis's own morning rush, and it's worth timing your Memphis and Birmingham passes for midday rather than either city's evening rush.