What to know before driving from Miami to Key West.
The drive from Miami to Key West looks simple because US 1 keeps heading southwest. In practice, it is a long chain of communities, bridges, speed changes, meal decisions, and tempting water views connected by one main highway.
Treat the Overseas Highway as the trip, not as a transfer you can rush. Choose a few meaningful stops and protect enough daylight to see the water, islands, and bridge approaches.
Learn the mile-marker language before the drive
Florida Keys locations are commonly described by mile marker, with Key West near Mile Marker 0 and numbers increasing toward the mainland. Saving the mile markers for meals, fuel, lodging, and planned stops makes it easier to understand how far remains.
- Upper Keys stops arrive while the drive still feels connected to the mainland.
- Middle Keys planning often centers on Marathon and the Seven Mile Bridge corridor.
- Lower Keys stretches can feel quieter and more open before Key West traffic.
- Key West parking and lodging should be decided before the final miles.
Do not let the mileage create a false arrival time
US 1 passes through communities and over bridges with changing speeds and limited passing opportunities. Crashes, bridge openings, road work, busy weekends, or a popular event can add time quickly.
Check FL511 before departure and again at a safe stop. Build the day around two or three priorities instead of collecting a long list of places that require repeated turns across traffic.
Take tropical weather seriously because the route is linear
Hurricane season runs from June through November. Follow the National Weather Service, National Hurricane Center, and Monroe County Emergency Management when a system could affect the Keys.
If officials issue visitor or evacuation instructions, those directions replace the sightseeing plan. Keep fuel above the point where a long traffic delay becomes stressful and know where you would stay on the mainland if conditions change.
Notice how the islands change along US 1
When your phone has internet, the JollyTango Miami-to-Key-West audio guide can share real-time stories about Keys communities, bridges, marine landscapes, food, history, and places around the drive.
Use FL511, official weather and emergency sources, signs, and navigation tools for traffic, closures, storms, and route decisions. JollyTango provides stories, not operational guidance.
Florida Keys traffic, weather, and emergency-planning sources
Make the island chain part of the destination.
Hear real-time stories along the Florida Keys when internet access is available.
Read the Florida Keys guide
