Biking the Florida Keys: Your Complete Guide to Cycling the Overseas Heritage Trail

Can you bike the Florida Keys? Yes, and it is one of the best ways to see the island chain. The Florida Keys Overseas Heritage Trail runs along the old Overseas Railroad route from Key Largo in the north to Key West in the south, planned at 106 miles with roughly 90 miles of paved multi-use path open today. In the Upper Keys, a continuous 26.8-mile stretch connects Key Largo, Tavernier, and Islamorada, which is exactly where the riding gets most scenic. Flat grades, ocean views, and trailheads with parking make the trail work for casual riders and serious cyclists alike.

I have spent more than 30 years in the Keys, and when buyers ask what makes the island chain special, the Overseas Heritage Trail is always on the list. It is the rare amenity that works for a morning coffee ride, a family outing, and a long training route all in the same week. This guide covers the best sections, where to rent, and how the trail shapes everyday life in the communities I serve.

Why the Keys Are a Great Place to Bike

The Florida Keys are flat. That is the first thing every visiting cyclist notices and the reason the chain works so well on two wheels. There are no mountain passes to climb, just long, level miles of pavement with water on one side or the other. The Overseas Heritage Trail gives you a dedicated paved path separated from Overseas Highway traffic for most of its length, which matters because US 1 through the Keys is busy and narrow in places.

The climate is another plus for most of the year. Fall through spring brings mild mornings and warm afternoons, while the early morning hours are the favorite time to ride even in summer, before the heat builds and while the light is soft over Florida Bay. My Fitness and Healthy Living in the Florida Keys post covers the local running and riding scene in more detail.

The Overseas Heritage Trail: A Rolling History Lesson

The trail's story starts with Henry Flagler's Overseas Railroad, the "railroad that went to sea," completed to Key West in 1912 and destroyed by the Labor Day Hurricane of 1935. The roadbed later became the foundation for the Overseas Highway, and the rail corridor that survived is now being converted into a multi-use trail. Today it is managed by the Florida Department of Environmental Protection's Florida State Parks, which plans the full corridor at 106 miles from Key Largo's Mile Marker 106 to Key West's Mile Marker 0.

Riders follow the old railway alignment, so the experience is part history tour. You cross the same fills and bridges the trains used, roll past remnants of the original spans, and watch the mile markers count down toward Key West. The longest continuous paved section sits in the Upper Keys: 26.8 miles of path connecting Key Largo, Tavernier, and Islamorada. That number comes from the official Florida State Parks page for the trail, which is the best source for current segment maps and closures.

Best Sections to Ride

The trail is built in segments, so the smart way to ride it is section by section rather than expecting one unbroken path all the way to Key West. Here is how the corridor breaks down by community:

• Key Largo to Islamorada (Mile Marker 106 to 73): The Upper Keys continuous stretch is the crown jewel, roughly 26.8 paved miles through Key Largo, Tavernier, and Plantation Key into Islamorada. It hugs the shoreline in places, passes mangrove-lined coves, and connects to bayside parks and beaches. This is the section new riders should start on.
• Islamorada to Long Key: The trail continues south past Founders Park and the island villages of Upper and Lower Matecumbe Key, with long bridge crossings that open up wide water views. Layton and Long Key State Park offer quieter stretches and a good lunch stop.
• Marathon and the Middle Keys: Around Duck Key and Grassy Key the trail threads toward Marathon, where riders can reach the historic Old Seven Mile Bridge. That 1912 span, closed to cars, remains open to walkers and cyclists and is one of the signature riding experiences in the Keys.
• Big Pine Key and the Lower Keys: The trail passes through Big Pine Key, home of the National Key Deer Refuge, rides near Bahia Honda State Park with its historic bridge remnants, and continues south through Cudjoe Key and Sugarloaf Key toward Key West.
• Key West: The southern end of the corridor finishes in the island city, where the pace slows, the restaurants multiply, and a sunset ride along the harbor is a fitting finish.

If you time a ride for late afternoon, pair it with one of the spots in my best sunset spots in the Florida Keys post. For beach days and swim stops, the ultimate Florida Keys beaches guide will point you to the sand within reach of the trail.

Where to Rent Bikes in the Keys

You do not need to bring a bike to enjoy the trail. Real rental shops and e-bike specialists operate along the route, and most will set you up with helmets, locks, and local route advice:

• Key Largo: All Keys Cycles at 103400 Overseas Highway, MM 103.4, rents and services bikes and is the longtime go-to shop at the top of the chain. Keys E-Bikes (keyselectricbike.com) adds pedal-assist options if you want to cover more ground with less effort.
• Islamorada: Otherside Boardsports on the bayside at MM 82.7 and Islamorada Watersports Company at MM 83.4 both carry rental fleets and board-sports gear, and their staff know the best Upper Keys segments. Key Largo Adventures also runs rentals and guided island tours from its Upper Keys base.
• Marathon and the Lower Keys: Seasonal rental shops and hotel concierge desks around Marathon can arrange bikes, and the Old Seven Mile Bridge area is a popular starting point for Middle Keys rides.

E-bikes are worth a mention because the trail is flat and the distances between towns are longer than they look on a map. A pedal-assist bike turns a Key Largo to Islamorada ride into a relaxed morning, and every rental shop above can match you to the right machine. Call ahead in season, because rental fleets book out fast when the weather is good.

Practical Tips for Riding the Trail

• Ride early. Morning is cooler, calmer, and the light over the water is at its best. By mid-afternoon the sun is intense and the trail gets busier.
• Hydrate and cover up. Bring more water than you think you need, use sunscreen, and wear a helmet. The Keys sun does not negotiate.
• Mind the gaps. The trail is not one continuous path from Key Largo to Key West yet. In the gaps you share the roadway with US 1 traffic for short stretches, so ride single file and use lights.
• Watch for wildlife. On Big Pine Key that means slowing for Key deer, which cross freely near the refuge. Everywhere, morning and evening are the active times for birds and small animals near the trail.
• Use the mile markers. Trailheads and parking are spaced along the corridor, and the mile marker system makes navigation simple. Ride out, park, and shuttle back, or plan an out-and-back.
• Respect the heat. Temperatures in the 90s with high humidity are routine in summer. Plan shorter rides in the warm months and longer ones in fall and spring.

For more outdoor ideas, my parks and outdoor recreation guide rounds up the state parks, nature trails, and preserves the trail connects. And if you want to mix wheels with water, the paddleboarding and kayaking guide covers the flat-water side of the same lifestyle.

Biking and the Real Estate Connection

The trail is more than a recreation amenity; it is a quality-of-life feature that buyers ask about constantly. Homes near trailheads and park access in Key Largo, Tavernier, and Islamorada are within an easy ride of dining, shopping, and the water, and that convenience shows up in how the neighborhoods feel day to day. When I show waterfront and canal properties, trail proximity is one of the details I point out, right alongside dockage, water depth, and seawall condition, because it shapes how owners actually live there.

Each community has its own character along the corridor. My Key Largo community guide, Tavernier community guide, and Islamorada community guide break down the neighborhoods and their access to the trail, and the Marathon community guide covers the Middle Keys, including the Old Seven Mile Bridge area. If the dream is a home where Friday means dropping the kayaks in the truck and riding to coffee, that is a lifestyle I can help you find, and my buying guide explains the practical steps to getting there.

Steve's Bottom Line

Biking the Florida Keys is one of the most enjoyable, affordable ways to experience the island chain, and the Overseas Heritage Trail makes it possible for riders of every level. Plan for the continuous Upper Keys miles, rent from a real local shop, ride early, and take the time to stop at the historic bridges and parks along the way.

And if riding the trail makes you start wondering what it would be like to live here, that is a conversation I would love to have. Call me at (305) 393-5859 or send a note through the contact page, and we can talk about the communities, the waterfront homes, and the ride you could be doing every weekend of the year.