The drive from Miami to Key West along the Overseas Highway is one of America’s great road journeys, and it is best experienced slowly, with a private driver, a few well-chosen stops and, ideally, a night at the end of the road. Without stops the trip takes roughly three and a half to four and a half hours each way, so a same-day return is possible but long; an overnight stay turns it into the trip it deserves to be.
The road itself
U.S. Route 1 leaves the mainland at Florida City and becomes the Overseas Highway at Key Largo, island-hopping for more than 100 miles across 42 bridges to Key West. It follows the route of Henry Flagler’s Over-Sea Railroad, completed in 1912 and largely destroyed by the Labor Day hurricane of 1935; many of the old rail bridges still stand beside the modern road.
Addresses in the Keys are given by green mile markers, counting down from around 127 near Florida City to zero in Key West. A good driver uses them as naturally as street names, and so will you by the end of the day.
The stops worth making
Key Largo
The first island, and the gateway to John Pennekamp Coral Reef State Park, the first underwater park in the United States. If the sea is calm and you have a full day to spare, a glass-bottom boat or snorkel trip here is a fine introduction to the only living coral barrier reef in the continental United States.
Islamorada
A string of islands known for sportfishing, art galleries and an easy, low-key elegance. It is the natural place for a morning coffee or an early lunch by the water, and a good choice for an overnight if you prefer quiet to Key West’s energy.
Marathon and the Seven Mile Bridge
Marathon sits at the midpoint of the Keys and is home to a well-known sea turtle hospital that welcomes visitors on guided tours. Just beyond it, the modern Seven Mile Bridge runs alongside the restored Old Seven Mile Bridge, which reopened to walkers and cyclists in 2022. A stroll out over the water toward Pigeon Key, the island that once housed the railroad’s workers, is one of the most memorable hours of the drive.
Bahia Honda State Park
Often cited among the most beautiful beaches in Florida, with pale sand, shallow turquoise water and the dramatic silhouette of the old Bahia Honda rail bridge. Conditions and open areas vary after storms, so we check the park’s status before travel.
Big Pine Key
The heart of the National Key Deer Refuge. These tiny deer, no bigger than a large dog, are often seen at dusk; drive slowly and never feed them.
Key West, beyond the crowds
Duval Street and the sunset gathering at Mallory Square are lively and worth seeing once, but the island rewards those who step a block or two away. Early mornings are wonderful: bicycle through Old Town’s lanes of Conch houses and tin roofs before the day-trippers arrive, visit the Ernest Hemingway Home and Museum when it opens, and walk to the beach at Fort Zachary Taylor Historic State Park for calm water and shade under the trees.
In the evening, a sunset sail offers the same horizon as Mallory Square with a fraction of the crowd. Dinner reservations are wise at any time of year.
Day trip or overnight?
| Day trip | Overnight (or two) | |
|---|---|---|
| Time on the road | Seven to nine hours round trip, before stops | Spread over two or three days |
| Stops | Two or three, kept short | All of the above, at an easy pace |
| Key West | A few hours in the busiest part of the day | Sunset, a quiet dinner and the early morning |
| Best for | Travelers with a single free day in Miami | Almost everyone else |
Our usual recommendation is to drive down with stops, stay one or two nights in Key West or Islamorada, and return directly. If time is short, a one-way drive with a return flight from Key West to Miami is another elegant option.
When to go
December through April brings the driest, most comfortable weather, with warm days and lower humidity, and it is also high season, so book hotels well ahead, especially around holidays and March spring breaks. May and November can be lovely shoulder months. From June to October it is hot and humid, with afternoon storms, and it falls within the Atlantic hurricane season, which runs until November 30. Key West’s Fantasy Fest in late October draws large crowds and an adult atmosphere that may not suit every group.
Practical tips
- Leave Miami early. Traffic through southern Miami-Dade can be heavy; an early start gains you the best light on the bridges.
- Travel privately. The highway is mostly two lanes, and a single incident can slow everything. A private driver who knows where to pause takes the strain out of the day and lets everyone look out of the window.
- Protect the reef. Bring reef-safe sunscreen, a hat and polarized sunglasses.
- Keep the schedule loose. The pleasure of the Keys lies in an unplanned half hour by the water.
Drive the Keys privately with AHL
We plan the Overseas Highway at your pace, with a private vehicle and driver we arrange and manage, carefully timed stops and hotels chosen for calm rather than crowds. Tell us how many days you have, and we will send a tailored proposal free of charge.
FAQ
How long is the drive from Miami to Key West?
Roughly 160 miles, usually three and a half to four and a half hours without stops, depending on traffic. With sightseeing stops, plan on most of the day.
Is a Key West day trip from Miami worth it?
It can be, if time is very limited, but it means seven to nine hours on the road. An overnight stay lets you see the stops properly and enjoy Key West at sunset and early morning.
What is the best stop on the Overseas Highway?
Many travelers single out the Old Seven Mile Bridge walk near Marathon and the beaches of Bahia Honda State Park. Islamorada is the best place for a relaxed meal by the water.
When is the best time to visit Key West?
December to April for dry, comfortable weather, though it is also the busiest season. May and November offer a good balance of weather and quieter streets.
