Visit Grassy Key

Rainbow Bend Resort
I never made it to the hot tub. If we stay again I hope to make it. Very roomie rooms.
Reviewed on Jan 8, 2026

Grassy Flats Resort & Beach Club
Beautiful resort, felt like a deserted island. Perfect to set! Staff was very friendly and helpful. Really enjoyed our quick getaway!!
Reviewed on Jan 5, 2026

Gulf View Waterfront Resort
Maria at the front desk was so nice and welcoming, letting me look around the property before deciding to making my booking decision. I got there an hour bedorw check in and she allowed me to gonin my room early. She even suggested a nearby place to eat. The room was neat and had a fully stocked ...
Reviewed on Dec 16, 2025

The Nautilus on the Ocean in Grassy Key 4 bed 3 bath with private pool, Hot Tub and oceanfront, 2 kayaks included
We had the best time in Marathon! The house was, clean, cozy and comfortable and the AC worked great! We loved the spacious areas for hanging out downstairs and the pool and hot tub were wonderful!!!!
Reviewed on Jul 24, 2025

Beachfront Explorer!
Great stay for 3 fisherman. Very nice RV park with pool. Rv close to Shower and Bath house. Very comfortable.
Reviewed on Mar 30, 2025

Yacht Haven Marina
Yacht Haven Marina was exactiy as described and we loved everything. We saw manatees outside the boat every day! The staff was very friendly and the house boat was perfect. Would definitely stay again.
Reviewed on Jan 5, 2026
Popular places to visit

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

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

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

Vaca Key
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.

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

Coco Plum Beach
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.
Things to do

Mangroves and Manatees - Guided Kayak Eco Tour

Day Sailing Adventure in the Florida Marine Sanctuary

Marathon: Private Cable or Cable Kiteboarding Session

Marathon Florida Keys Fishing Experience

Marathon: Intro to Foilboarding Experience
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