Marathon, Florida Marinas for Sale

Marathon anchors the Middle Keys at mile marker 50 on the Overseas Highway, with deep-water access to both Florida Bay and the Atlantic via the Seven Mile Bridge corridor. Monroe County's designation as an Area of Critical State Concern means new development is virtually impossible — building permits are allocated by the state based on hurricane evacuation capacity, and Marathon's allotments are projected to run out by mid-2026. That scarcity makes existing marina assets extraordinarily valuable. Safe Harbor Marinas acquired Marathon Marina (123 slips plus an RV resort), and Suntex took over Faro Blanco Marina (74 slips with expansion plans). Both buyers cited surging national boat sales and chronic slip shortages as drivers. Any marina that trades here comes with a regulatory moat that no new competitor can breach.

Marathon, Florida currently has 5 marina listings tracked by Marina Deal Flow. 4 have publicly listed asking price, while 1 requires contacting the broker for pricing. Across all of Florida, there are 50 marinas currently listed for sale.

Our database includes 37 recent marina transactions in Florida, providing comparable sales data for buyers evaluating the Marathon market.

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For more context, read our guides on how to value a marina, price per slip benchmarks, and our first-time buyer's guide.