Marathon Real Estate Search

Marathon Properties over $5,000,000 for Sale

Our website features the best real estate search for available properties over $5,000,000 in Marathon and surrounding areas. It is the only site you will ever need! It is easy-to-use and updated by the official REALTOR®’s database every 15 minutes.

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Newest Marathon Properties over $5,000,000 for Sale

5 Beds ⋅ 4 Baths ⋅ A12060805 MLS ⋅ Sunrise Isle BLDG.

Nestled on the exclusive private gated island of Sunrise Isles in Marathon, Florida Keys, this magnificent 2019 oceanfront estate redefines luxury living. One of only 20 residences within this secure island enclave, it offers an exceptional blend of privacy and the serene beauty of the Keys. This exquisite 5-bedroom, 4-bathroom residence spans approximately 3,500 square feet of crafted living space designed to capture breathtaking ocean views. The open-concept single-level floor plan seamlessly connects gourmet kitchen, dining, and living areas, while floor-to-ceiling windows flood the home with natural light. Each bedroom features an en-suite bathroom, while the primary suite offers panoramic ocean views and a spa-inspired bath. Impact-resistant sliding glass doors open to approximately 700 square feet of covered terrace, creating exceptional indoor-outdoor living. Set on over 32,000 square feet of waterfront property, the estate boasts 110 feet of sandy beachfront and an additional 110 feet of protected canal dockage with two custom boat lifts and an L-shaped synthetic dock, providing effortless access to open water. Outdoor amenities include a resort-style pool with water features, creating the perfect island retreat for entertaining or relaxing. Just ½ mile from Sombrero Beach and minutes from shopping, dining, and Marathon Airport, this extraordinary Sunrise Isles estate presents a rare opportunity to own one of the Florida Keys' finest luxury oceanfront residences.

108 Sunrise Dr, Marathon

4 Beds ⋅ 5 Baths ⋅ A12028272 MLS ⋅ Sunrise Isle BLDG.

Experience the rare combination of protected dockage and direct oceanfront living at 128 Sunrise Drive. Situated within an exclusive gated enclave of just 20 lots, this newly constructed 2025 waterfront residence offers a level of privacy, luxury, and lifestyle rarely found in the Florida Keys. Positioned to capture unobstructed ocean views and a year-round ocean breeze, this home offers an elevated coastal lifestyle with exceptional attention to detail throughout. Each bedroom features a private ensuite bathroom and spacious walk-in closet, while a true foyer entry, elevator, and abundant storage create a floor plan that is as functional as it is beautiful. The open concept living offers the perfect home to entertain and enjoy tons of natural light. The interior design offers high end tile selections, designer light fixtures and wood accents throughout. The home also features 3 interior bars and window treatments throughout. The living spaces seamlessly transition outdoors, where an expansive entertainment area is designed to embrace the Keys lifestyle. Enjoy a resort-style pool and hot tub, outdoor kitchen, and multiple spaces to relax while overlooking the waters of the Atlantic. A rare wade-in beach offers effortless access to the ocean, while protected dockage on the canal side provides a secure spot for your boat. Additional features include a one-car garage, oversized air-conditioned storage space, and a generous covered carport ideal for vehicles, boats, and more!

128 Sunrise Drive, Marathon

10 Beds ⋅ 13 Baths ⋅ A11977067 MLS ⋅ Crains Subd BLDG.

A Private Waterfront Estate at The Edge of the Gulf of America. Set on 3 secluded acres+/- along one of the most protected stretches of the Gulf of America, 57783 Morton Street is a newly completed estate of rare scale, privacy, and modern coastal design. Surrounded by water, sandscape, and tidal ponds alive with marine life, the property offers more than 200’+/- of direct water frontage and uninterrupted views across the open Gulf. Completed in 2025 by builder and developer Alderuccio Corporation, this resilient, elevated retreat is constructed entirely of concrete and impact glass and is designed for effortless indoor–outdoor living. With three distinct finished living spaces totaling approximately 10,000 SF+/-, the estate functions as a private resort offering privacy, recreation, and exceptional access to the best of the Florida Keys.

57783 Morton Street, Marathon

A11940104 MLS ⋅ Crains Subd BLDG.

Rare oceanfront development opportunity in the heart of the Florida Keys. Encompassing nearly 6 acres of pristine oceanfront land in Grassy Key, this exceptional parcel presents an ideal canvas for developers seeking to create luxury residential units with direct oceanfront and beach access. Surrounded by unspoiled natural beauty and tranquil beaches, the property offers immediate proximity to shopping, fine dining, spas, marinas, and world-class boating. Residents will enjoy unparalleled access to deep-sea fishing, scuba diving, snorkeling, and vibrant coral reefs, all set against the backdrop of the Keys’ iconic turquoise waters. Located in Marathon, often referred to as the Heart of the Florida Keys, the site benefits from a highly desirable central Keys location, conveniently positioned between the Upper Keys—such as Islamorada—and the Lower Keys, including Key West. Marathon is known for its rich maritime history, local airport, and accessibility, serving as a central hub comprising islands such as Vaca Key, Duck Key, and Grassy Key.

57478 Overseas Hwy, Marathon

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