Marathon Key Attractions You Can’t Miss

Nestled halfway between Key Largo and Key West, Marathon is one of the most captivating destinations in the Florida Keys. Spanning across several islands, including Vaca Key, Fat Deer Key, and Grassy Key, Marathon is a family-friendly tropical paradise offering a blend of adventure, marine life encounters, historical charm, and picturesque views. If you’re planning a trip to the Florida Keys, here are the top attractions in Marathon you simply can’t miss.

1. Seven Mile Bridge

One of the most iconic structures in the Florida Keys, the Seven Mile Bridge connects Marathon to Little Duck Key. Driving over this engineering marvel is an unforgettable experience—especially at sunrise or sunset. The older section of the bridge, now open for walking and biking, offers panoramic views and photo-worthy spots. It’s a favorite for joggers, fishermen, and those wanting to soak in the vast ocean views.

Don’t Miss: Walk or bike the Old Seven Mile Bridge to Pigeon Key for a scenic adventure.

2. Dolphin Research Center

Located on Grassy Key, the Dolphin Research Center (DRC) is a nonprofit facility where visitors can interact with dolphins and sea lions in an ethical, educational setting. This center is known for its commitment to research, rehabilitation, and education.

Guests can take part in various interactive programs such as “Trainer for a Day,” or simply watch these intelligent creatures play and communicate. It's a fantastic stop for families and animal lovers.

3. The Turtle Hospital

Marathon is home to one of the most unique conservation centers in the U.S.—The Turtle Hospital. This working hospital rescues, rehabilitates, and releases injured sea turtles, and it offers daily guided educational tours. Visitors can see turtles being treated, learn about the threats they face, and even adopt a turtle.

Why Go: It’s an inspiring place that highlights the importance of marine conservation and gives a rare behind-the-scenes look at animal care.

4. Sombrero Beach

Often considered one of the best beaches in the Keys, Sombrero Beach is a local treasure. This beautiful stretch of soft sand, swaying palms, and turquoise waters is perfect for a relaxing day in the sun.

The beach features picnic areas, restrooms, volleyball courts, and accessibility for people with disabilities. It’s also a nesting site for sea turtles, so certain areas may be protected seasonally.

Tip: Visit on weekdays for a quieter experience and bring snorkeling gear—there’s a chance to see some marine life close to shore.

5. Pigeon Key

Accessible by ferry or by walking/biking along the Old Seven Mile Bridge, Pigeon Key is a small island with a big history. Once a home base for workers who built the original Overseas Railroad, the island now serves as a museum and educational site.

Visitors can tour historic buildings, learn about Henry Flagler’s railroad dream, and snorkel or picnic in its surrounding waters. It’s a perfect mix of history, nature, and serenity.

6. Crane Point Hammock & Nature Trail

If you want to experience what the Florida Keys looked like before development, Crane Point Hammock is the place. This 63-acre nature preserve offers walking trails through tropical hardwood hammock forests, a butterfly garden, and a natural history museum.

It’s also home to the Adderley House—the oldest house in the Keys outside Key West—built by a Bahamian immigrant in the early 1900s. The sanctuary is ideal for bird watchers and nature photographers.

7. Florida Keys Aquarium Encounters

This interactive marine park offers hands-on experiences with various marine animals. At Florida Keys Aquarium Encounters, you can feed stingrays, swim with tropical fish, and observe sharks up close.

One of the highlights is the coral reef encounter, where visitors snorkel in a tank mimicking a real reef ecosystem. It’s educational and fun for all ages, especially kids.

8. Curry Hammock State Park

For those seeking outdoor adventure and tranquility, Curry Hammock State Park is a must. Located just north of Marathon, it features mangrove swamps, seagrass beds, and a long stretch of pristine beach.

Popular activities include kayaking, paddleboarding, bird watching, and kiteboarding. The park also offers campgrounds for those wanting to stay overnight surrounded by nature.

Pro Tip: Rent a kayak and paddle through winding mangrove trails for a peaceful, immersive experience.

9. Keys Fisheries Market & Marina

No trip to Marathon is complete without tasting fresh seafood, and Keys Fisheries is the place to go. Known for its famous lobster Reuben sandwich, this dockside eatery serves locally caught seafood in a casual setting with beautiful water views.

You can also buy fresh catch to cook at home or enjoy their marina views while savoring the best of the Keys' cuisine. It’s a must-visit spot for foodies.

10. Marathon Air Museum

For aviation and military history enthusiasts, the Marathon Air Museum (also known as the EAA Chapter 1241 Museum) showcases historical aviation artifacts, model aircraft, and World War II memorabilia.

Though small, the museum offers fascinating insights into aviation’s role in the region and is run by passionate volunteers eager to share their knowledge.

Why Visit Marathon?

Unlike the bustling nightlife of Key West or the diving scenes of Key Largo, Marathon strikes the perfect balance between adventure, relaxation, and local charm. Whether you're traveling solo, with family, or as a couple, Marathon offers a rich blend of attractions tailored to all interests—marine life encounters, tropical beaches, historical landmarks, and natural beauty.

Bonus Tips for Visiting Marathon:

• Best Time to Visit: December to May offers mild weather and fewer chances of rain.

• Getting Around: A car is recommended to explore all the attractions across the connected islands.

• Family Friendly: Many attractions, like the Dolphin Research Center and Turtle Hospital, are perfect for kids.

• Eco-Tourism: Many sites promote sustainable tourism and marine conservation—support local efforts when you can.

Final Thoughts

Marathon isn’t just a stopover on the way to Key West—it’s a destination in its own right, offering unforgettable experiences both on land and sea. Whether you're gazing at the horizon from the Seven Mile Bridge, learning about sea turtle rescue efforts, or snorkeling in clear tropical waters, Marathon will leave you with memories to last a lifetime.

So, the next time you're heading to the Florida Keys, make sure you set aside time to explore Marathon’s top attractions—you truly can’t miss them