Things to do in Grassy Key

Learn about the playful nature of dolphins before swimming alongside these clever marine mammals at this entertaining research facility.

Play beach games; go swimming, kayaking or snorkeling; and lounge in the sun at one of Marathon’s most visited beaches.

Walk, jog, cycle or drive across one of the longest bridges in North America to take in the scenic ocean views it provides.

Go camping near mangroves, bird-watching beneath a thick canopy or kayaking between the islands of this scenic state park in the Middle Keys.

Commune with nature and explore the great outdoors at Vaca Key during your travels in Marathon. Stroll along the beautiful beaches or discover the area's beautiful sunsets.

Why not spend a lazy afternoon at Coco Plum Beach during your trip to Marathon? Discover the area's beautiful sunsets, or seek out its jogging trails.

Explore the campus of The Turtle Hospital during your stay in Marathon. Stroll along the area's seaside, or simply savor its seafood restaurants.

Play a round of golf in Marathon at Florida Keys Country Club, and enjoy other activities such as running. Stroll along the area's marina, or simply savor its seafood restaurants.

Explore the waterfront of Captain Hooks Marina and Dive Center and enjoy other activities such as running in Marathon. Wander the beautiful beaches and seaside in the area.