The drive out of Miami Airport to Key Largo covers roughly 58 miles of highway and usually takes between one hour and an hour and a half. Islamorada sits about 76 miles out and takes around two hours. Marathon lies near 111 miles away and often needs two and a half hours behind the wheel, longer on a busy weekend. Every one of those drives runs along a single road, the Overseas Highway, which is also US 1. One slow stretch can change the whole afternoon.
This guide covers the route out of Miami International Airport, what to expect in each of the three island towns, how to choose between a rental car, a shuttle and a private transfer, and when traffic or weather turns a simple drive into a long one. Plan around the details and the Keys start feeling close.
Distances Between Miami Airport and the Upper and Middle Keys
Distances in the Keys use mile markers, small green signs that count down along US 1 before they reach zero in Key West. Locals give every address by marker. Learn the system early.
Key Largo starts near mile marker 106 and stretches south to about marker 91. The town of Tavernier sits at its southern end. Islamorada covers markers 90 to 72 and includes several small islands. Marathon begins near marker 60 and runs down to the Seven Mile Bridge at marker 47. Based on the figures published by the Florida Keys tourism council, those towns sit about 58, 76 and 111 miles away.
Drive times depend on the hour much more than the distance does. With light traffic, expect these ranges out of the airport.
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Key Largo, about 1 hour to 1 hour 30 minutes.
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Islamorada, about 1 hour 30 minutes to 2 hours.
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Marathon, about 2 hours to 2 hours 30 minutes.
Travelers who would rather skip the driving can arrange Miami airport transportation in advance, with a driver who tracks the flight and waits at arrivals. That option makes the most sense after a long flight, when the last thing anyone wants is a rental counter and an unfamiliar highway.
The Road Out of MIA to the Keys
Most drivers follow the same route. Leave the airport area and head west on the Dolphin Expressway, then pick up Florida's Turnpike south. The Turnpike runs straight toward Florida City, where it ends and becomes US 1. After that, the road crosses open wetland and then reaches the first bridges to Key Largo.
That first piece of US 1 goes by the name 18 Mile Stretch. It runs through mangroves and marsh with long straight sections, and it has only one lane in each direction in many places. Passing zones exist, though a slow truck or a fender bender can hold up the line for miles. Drivers should stay patient and keep to the posted speeds, which police enforce.
A second route exists. Card Sound Road branches off near Florida City and joins the Keys through a toll bridge at Card Sound. It can save time when the main road backs up, and the scenery feels quieter. The road is narrower, though, and it passes fewer services. Check your fuel level before you go.
Gas stations and restrooms appear regularly once you reach Key Largo. The long stretch before it has very few. Top off the tank in Florida City or Homestead if you rent a car.
Miami Airport to Key Largo
Key Largo is the first of the Keys and the easiest to reach. It works well for travelers who land late or only have a weekend, because the drive is short enough to manage after an evening flight.
The town calls itself the diving capital of the Keys. John Pennekamp Coral Reef State Park sits at about marker 102 and protects a large stretch of living reef. Glass bottom boats, snorkel trips and kayak rentals all leave out of the park. The Christ of the Abyss statue, a bronze figure resting underwater, draws snorkelers and divers to a reef just offshore.
Dining in Key Largo leans toward fresh seafood and casual waterfront spots. Many sit right beside US 1. Check the parking situation before you pull in. Lodging runs between small motels and large resorts on Florida Bay and the Atlantic side.
Anyone staying here for a few days can easily explore Everglades National Park by day, since the park entrance near Homestead sits only a short ride north. That makes Key Largo a smart base for travelers who want both reef and wetland.
Miami Airport to Islamorada
Islamorada is a chain of islands that carries the title of sport fishing capital of the world. Fishing charters, tarpon feeding and boat tours dominate the calendar. At Robbie's Marina, visitors feed tarpon right off the dock, a simple pleasure that kids tend to remember for years.
The village spreads along about 18 miles of highway and includes Plantation Key, Windley Key, Upper Matecumbe and Lower Matecumbe. Several small parks sit on the Atlantic and bay sides, and two stand out. Lignumvitae Key Botanical State Park and Indian Key Historic State Park both require a boat to reach. Plan a charter or tour in advance.
Drive time out of MIA runs about 1 hour 30 minutes to 2 hours, and weekend traffic stretches it. Islamorada fits travelers who want a quieter feel than Key Largo and a lot of choice for dinner by the water. Lodging ranges between small family inns and luxury resorts, and many properties sit on the bay side where sunsets are the main event.
Pick up and drop off need a little care. Resorts often tuck their entrances off the main road, and street addresses are rare. Share your mile marker, the name of the property and the side of the road it sits on, bay side or ocean side, with your driver.
Miami Airport to Marathon FL
Marathon sits near the middle of the chain and forms its working heart. It runs around marker 60 down to the Seven Mile Bridge, one of the longest bridges in the Keys, and it offers the most variety in the area.
The town includes Sombrero Beach, a calm public beach with a shallow swimming area, and the Turtle Hospital, where visitors tour a working rescue center for injured sea turtles. Crane Point Museum and Nature Center covers local history and hammock trails. Marathon also has a small airport that serves private and limited commercial flights, useful for those who already know their plans.
The drive out of MIA takes roughly 2 to 2 and a half hours without traffic, and Marathon makes a handy stopping point for anyone heading further. Bahia Honda State Park, famous for its beach, lies just south of the Seven Mile Bridge. Travelers continuing to the end of the road will find that a Miami Airport to Key West transfer adds another hour or more of driving. Book a longer ride if you plan to go all the way down.
Our flight got in at 6 in the evening and by 8 we were sitting on a dock in Islamorada with dinner in front of us. The driver even knew where to pull over for the sunset.
Ways to Get to the Keys After You Land
You have four main choices once your bags are in hand.
A rental car gives full freedom, and the Keys reward drivers who enjoy stops at roadside docks, bait shops and key lime pie stands. The downside is parking. Resort fees, narrow lots and limited spots can add up. Drivers also need to stay alert on a road with long bridges and constant lane changes.
Shuttles run between the Miami area and the Keys at set times. They cost less than a private ride, though the stops add time and the schedule may not match your flight. If you land late, you may find that no shuttle runs at all.
Taxis and rideshares can make the trip, though fares climb fast on a long one way ride, and few drivers wait to get a return fare out of the Keys. Many will not accept the ride at all.
A pre booked private transfer takes the stress out of the planning. The driver watches your flight, loads the luggage and drops you at the door of your hotel or rental house. Groups and families usually find this the easiest option, particularly when fishing rods, snorkel gear or coolers come along. Transpovia is a marketplace for private ground transportation, and it lets you compare vehicle types and book before you fly.
Some travelers also combine the Keys with a stay on the Gulf Coast. The drive between the two coasts runs across the Everglades and takes roughly two hours, and a Miami to Naples transfer can bring you out of the Keys and into Southwest Florida without renting a car. Think about that option if your trip includes both sides of the state.
Timing the Drive, Traffic and Seasons
Travel days matter more than almost any other detail. Southbound traffic builds on Friday afternoons, especially in late spring and through the summer, and northbound traffic backs up on Sunday afternoons. If you can, drive south in the morning or on a weekday, and head north early on Sunday.
The lobster mini season in late July, and the start of the regular season in early August, bring boat trailers and crowds to the island chain. Holiday weekends and the winter high season between December and April also fill hotels and roads. Book rooms and rides early for those dates.
Hurricane season lasts between June 1 and November 30. Storm watches can close bridges and trigger evacuation orders, and flights into Miami may shift quickly. Check the forecast before you travel, keep your plans flexible and buy travel insurance that covers weather.
A last tip for late arrivals. Many Keys restaurants close their kitchens early, often by 9 or 10 at night, and a few shut down for the season in September and October. Eat at the airport or ask your hotel what stays open.
Choosing a Base for Your Trip
Each town suits a different kind of stay, and the right pick saves a lot of driving.
Key Largo works for short trips and for travelers who want reef activities close to the airport. Divers, snorkelers and anyone with a morning flight out of Miami will appreciate the shorter drive back. Islamorada suits anglers, couples and families who want a relaxed pace, plenty of boat trips and good dinners beside the water. Marathon fits travelers who plan to explore more than one island, since it sits near the middle and puts both Key Largo and Key West within a day's reach.
Remember that distance in the Keys feels longer than the numbers suggest. A 20 mile hop may take 40 minutes because of traffic lights, bridge work and slow zones. Avoid packing too many stops into one day, and leave room for the hour you will lose behind a boat trailer.
What to Pack and What to Tell Your Driver
The Keys run on sun, salt and small distances between tiny conveniences. A few details help.
Bring a light rain jacket, reef safe sunscreen, a hat and shoes that can get wet. Pack a small cooler bag if you plan to buy fresh fish or bring snacks onto a boat. Dive gear, fishing rods and coolers take up real space. Mention them when you book a ride. A larger vehicle costs a little more and avoids a tight squeeze.
Give your driver the exact name of the hotel or rental, the mile marker and the side of the road. Share a phone number that works in the Keys, since cell coverage can drop on long bridges. If you arrive late, confirm with the property that someone will hand over keys or a door code, because many small inns close their front desks early.
FAQs
How long does it take to reach Key Largo by car?
Most trips take between one hour and an hour and a half. Weekend traffic and Friday afternoons can add 30 minutes or more.
What is the distance between MIA and Islamorada?
Islamorada sits about 76 miles away, and the drive usually takes around two hours.
How long is the drive to Marathon?
Expect two to two and a half hours with normal traffic. The distance is about 111 miles.
Is there an alternate route to Key Largo?
Yes. Card Sound Road offers a second way in, and it includes a toll bridge. It can help when the main road is slow, though it has fewer services.
Can I take a taxi or rideshare to the Keys?
You can try, though fares run high and many drivers decline long one way trips. A pre booked private transfer avoids that uncertainty.
Do I need a rental car in the Keys?
Not always. Many hotels and resorts are close to restaurants and tours, and a private transfer covers the drive out of the airport. A car helps if you want to explore several towns.
Plan the Drive Before You Land
Miami Airport to Key Largo is an easy drive, Islamorada asks for a bit more patience and Marathon rewards a longer day. Pick your base, check traffic for your travel day and share a mile marker with whoever drives you. Those small choices keep the trip simple.
If you would rather relax after landing, you can book an airport transfer or private ride through Transpovia and let a driver handle US 1 while you watch the water.
