Quick Real Estate Search

Marathon - Community Overview

 

Accessible by car, boat, and plane, Marathon is sought after as a vacation destination, second home, or full-time residence. Located in the middle of the Florida Keys, Marathon is comprised of Grassy Key, Crawl and Little Crawl Key, Long Point Key, Deer Key, Fat Deer Key, Vaca Key, Stirrup Key, East and West Sister’s Island, Boot Key, Hog Key, Knights Key from mile marker 60 to 47. Marathon International Airport conveniently has a range of services for charter flights, corporate jets, and private aircraft.

One of the most marine-friendly locations in the Florida Keys, Marathon offers over 1,400 wet and dry boat slips easily accommodating many types of watercraft. Easy boating access to the Gulf side and the Oceanside. Book a charter boat to try deep-sea fishing, reef fishing, or flats fishing. Spend the day relaxing on the white sandy beaches. Visit the local shops or indulge in waterfront dining.

Marathon is home to numerous landmarks dedicated to helping local marine life. Visit the Dolphin Research Center, The Turtle Hospital, and Aquarium Encounters. Florida Keys history surrounds these islands, such as Pigeon Key a national historic landmark. The Flagler Railroad bridge stands adjacent to the Seven Mile Bridge, the longest bridge in the Florida Keys.

Investment property, luxury waterfront residences, condos, and moderate homes are found on these keys. Marathon has some of the world’s best fishing, sandy beaches, and tropical climate.

 

 

Active Listings in Marathon

$40,000,000
8 Beds ⋅ 11 Baths ⋅ 619826 MLS
A rare dual-offering on coveted Millionaire's Row in Tavernier, this extraordinary oceanfront compound spans over multiple acres across two parcels-delivering an unmatched combination of scale, privacy, and future development flexibility in the Florida Keys. At 88845, a newly constructed 8,200SF estate sets a new standard for modern coastal luxury. Thoughtfully designed for both grand entertaining and private retreat, the residence offers 5 bedrooms, 6 full baths & 2 half baths, complemented by a dedicated office, control room, mudroom, and expansive 3-car garage with climate-controlled workshop. Interior finishes are curated at the highest level, including white diamond marble, teak wood flooring, custom millwork & a vapor fireplace, while a full-home sound system, elevator & advanced mechanical infrastructure provide seamless functionality. The chef's kitchen is equipped with top-tier Wolf, SubZero, & Cove appliances, dual dishwashers, farmhouse sinks, refrigerated drawers, wine storage & custom mahogany countertops-designed to accommodate both everyday living and large-scale entertaining. Outdoor living is equally impressive, anchored by a 120-foot resort-style pool with integrated spa, heating & chilling systems, & full smart control. A fully equipped summer kitchen, cabana bath, & multiple covered terraces create a true waterfront lifestyle experience. With 480 feet of water frontage, the protected basin offers exceptional boating capabilities, including 90 feet of dockage & room to expand, a 20,000lb lift, boat ramp & deep-water access. The adjacent parcel at 88835 provides over 3 acres of additional opportunity featuring a renovated 3-bedroom residence completed in 2022, with a transferable TDR allowing for the development of a substantially larger primary home. The property also includes a buildable lot & natural hammock buffer for added privacy. Together, these two properties present a generational opportunity to own a one of a kind waterfront compound.

88835 & 88845 Old Hwy, Tavernier
$35,000,000
9 Beds ⋅ 10 Baths ⋅ 613902 MLS
Zephyr Cove; the extravagant aquatically inspired retreat that you deserve. Located on the breathtaking waterfront nestled along the Gulf and designed and built by D'Asign Source. This stunning estate invites you to experience the perfect balance of luxury, tranquility, and adventure. With both fresh and saltwater elements woven into its design, every detail has been thoughtfully crafted. At the heart of the property lies a lazy river loop infinity pool, complete with bridges, swim-up pool bar in gazebo, spa with table, lap pool, beach-style entries, and waterfall grotto plus gas fire pit, putting green, and tropical gardens. From floating under the sun, entertaining guests, or enjoying a peaceful evening by the water, this home was manifested for unforgettable moments. Grand main residence vaunts an impressive private primary wing and elegant open spaces designed for comfort and entertainment. Indoor amenities include a temperature-controlled wine room, game room, home theater, fitness center, and conference room; endless ways to unwind and enjoy life. Two additional charming two-bedroom villas and a separate two-bedroom guest house are perched next door, perfect for hosting family and friends with style and privacy. Designed for the ultimate coastal lifestyle with outdoor kitchen and dining areas set against breathtaking Gulf views, ideal for entertaining or simply soaking in the beauty of your surroundings. Ample dockage and multiple boat lifts for your toys, located right between Vaca cut and Tom's Harbor Cut for easy Ocean access. Expansive garages and storage spaces provide ample room for vehicles, boats, and all essentials. Whole-home 130kw generator in its own private structure, ensuring peace of mind no matter the season. This is where everyday life feels like you're being pampered at a lavish resort. Step into a world where the beauty of nature meets unparalleled craftsmanship and let the magic of the Gulf welcome you home. 15 min to private airport.

57223 Morton St, Marathon
$29,500,000
10 Beds ⋅ 13 Baths ⋅ 619972 MLS
Newly Built Gulf-front Sanctuary with Panoramic Views, Guest and Pool Houses, Luxe Outdoor Living, and a Deepwater Navigable Dock. 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. Though private and serene, the estate remains close to everything that defines Keys living. Dining, marinas, and shopping are less than ten minutes away, and the Florida Keys Marathon International Airport lies 4 miles+/- from the property for seamless private aviation access. Deepwater routes, snorkeling coves, and renowned fishing grounds are just moments from the protected 100' dock. The architecture emphasizes clarity, durability, and immersion in water and light. Walls of impact glass capture views of the Gulf, the bay, and the property's own tidal ponds, allowing natural light to animate the interiors throughout the day. Generous room proportions, ceiling heights of 10' to 12', and open circulation reinforce a sense of airiness and connection. Every finish, from porcelain flooring to quartzite counters and exterior of shell-stone, was selected for both resilience and refined coastal style. Smart home systems, solar power with battery backup, and integrated storm protection underscore a commitment to performance and longevity.

57783 Morton St, Marathon
$29,500,000
6 Beds ⋅ 6 Baths ⋅ 618152 MLS
A once-in-a-lifetime opportunity to own one of South Florida's most iconic properties. Welcome to Tea Table Key, a breathtaking 15-acre private island estate, accessible by car or by boat, located just minutes from downtown Islamorada and directly across from the famous Alligator Reef Lighthouse. Surrounded by vivid turquoise waters, this extraordinary sanctuary offers complete privacy and a front-row seat to nature's daily spectacle -- herons and egrets gliding overhead, pelicans diving at sunrise, and eagles soaring above your shoreline. Enjoy the rare luxury of total seclusion without sacrificing convenience. Within minutes, you're immersed in Islamorada's finest restaurants, art galleries, and shopping, yet at home you're embraced by the stillness of your own island world. Conveniently located approximately 1 hour and 30 minutes from Miami International Airport, or a 25-minute helicopter or seaplane ride, Tea Table Key offers an unmatched combination of accessibility and exclusivity. The island features a beautifully updated 6-bedroom residence, along with a tennis court and private dockage. Whether you choose to enjoy the comfort of the existing home or envision an entirely new luxury residence, Tea Table Key presents a truly incomparable canvas in one of the most sought-after destinations in the Florida Keys.

79775 Overseas Hwy, Islamorada
$29,000,000
4 Beds ⋅ 6 Baths ⋅ 620394 MLS
Villa Lago is an Italian-inspired waterfront estate positioned along 220 feet of pristine Florida Bay frontage in Islamorada. Offering 8,194 SF of living space on 1 acre of bayfront property, a dramatic arrival unfolds beneath soaring 30ft ceilings, leading into a grand living space framed by turquoise bay views. An arcaded hallway with a hand-tiled barrel-vaulted ceiling connects interiors featuring Italian finishes, exquisite marble details, five fireplaces, hand-painted ceiling frescoes, and a one-of-a-kind imported tile roof. Florentine quatrefoil windows, Juliette balconies, wrought-iron railings, copper rain gutters, and hand-carved marble corbels enhance the home's architectural character. The floor plan includes four bedrooms, with three guest suites on the main level and a private third-floor primary retreat featuring two fireplaces, an office, tea room, sitting room, custom walk-in closet, private laundry room, spa-inspired bath, and balconies overlooking the living spaces below. The chef's kitchen is appointed with Viking, Miele, U-Line, and Sub-Zero appliances, a walk-in pantry, and dedicated prep kitchen. A pass-through window connects to the outdoor kitchen with a Viking grill, refrigeration, ice maker, bar seating, and covered dining overlooking the pool, beach, and bay. Additional spaces include a formal dining room with a hand-painted ceiling fresco, wellness room, sauna, private theater with wet bar, and a billiards lounge with mahogany coffered ceilings and coconut wood flooring. Outside, an infinity-edge pool, sunken gazebo with swim-up seating, putting green, fountains, and tropical landscaping. Deep-water dockage, white-sand beach, and crystal-clear waters provide immediate access to world-renowned fishing, diving, snorkeling, and boating. Additional features include an air-conditioned boat room, skiff ramp, 4,000+ SF collector's garage, elevator servicing all 3 levels, Control4 smart home integration, Sonos, and secure walled & gated grounds.

75090 Overseas Hwy, Islamorada
$27,000,000
5 Beds ⋅ 8 Baths ⋅ 619825 MLS
Set on over 2 acres along prestigious Millionaire's Row in Tavernier, this newly constructed oceanfront estate represents a rare convergence of scale, design, and functionality in the Upper Florida Keys. Encompassing 8,200 square feet of interior living space and over 16,000 square feet total, the residence is thoughtfully designed to accommodate both elevated everyday living and large-scale entertaining.The home features 5 bedrooms, 6 full baths, and 2 half baths, with all bedrooms offering en suite accommodations, custom closet build-outs, and refined finishes throughout. Additional interior spaces include a dedicated office, control room, mud room, and laundry room, providing both comfort and operational efficiency. A private elevator, whole-home sound system, and advanced mechanical infrastructure--including 600-amp service, multiple electrical panels, and five independent AC zones--underscore the property's level of detail and performance. Interior finishes are curated with a modern coastal aesthetic, highlighted by white diamond marble and teak wood flooring & a custom steel roof. The chef's kitchen is outfitted with top-tier Wolf, SubZero, and Cove appliances, including a 60-inch range, dual dishwashers, farmhouse sinks, and custom mahogany countertops--designed to seamlessly blend form and function. Outdoor living is equally exceptional, with 240 feet of oceanfront, anchored by a 120-foot resort-style pool, complete with multiple heating and chilling systems, a gas-heated spa, and full smart control. A fully equipped summer kitchen, cabana bath, and multiple covered entertaining areas create a true indoor-outdoor lifestyle experience. Additional highlights include a 3-car garage and fully equipped workshop with air conditioning, utilities, security systems, and custom lighting. The property is also zoned for weekly rentals, presenting a compelling opportunity for both personal enjoyment and income potential.

88845 Old Hwy, Tavernier
$26,400,000
7 Beds ⋅ 10 Baths ⋅ 620022 MLS
Escape to Palm Paradise, a breathtaking oceanfront estate on 7.64 private acres in Islamorada, offering 369 feet of shoreline and sweeping Atlantic views. Tucked behind gates on Plantation Key, this secluded retreat combines lush tropical landscaping with unmatched privacy for the ultimate island escape. The 8,988-square-foot main residence showcases exceptional craftsmanship and thoughtful design. One wing features a dramatic two-story primary suite with a private office, while the opposite wing includes four additional bedrooms and four bathrooms across two levels. A separate two-bedroom guest house provides extra space for visitors, and a whole-house generator adds convenience and peace of mind. Inside, custom woodwork, coffered ceilings, built-ins, and high-end finishes create a warm yet refined atmosphere. Amenities include a chef's kitchen, wine cellar, private gym, elevator, and seamless indoor-outdoor living spaces ideal for entertaining or relaxing by the water. Resort-style outdoor features include a custom pool, tiki bar, outdoor kitchen, beachside fire pit, putting green, observation pier, and a lighted tennis court with cabana. Convenient access by seaplane, helicopter, or a 90-minute drive from Miami makes travel effortless. Perfect for boating enthusiasts, the estate is near dockage and concierge dry storage options. Located in the heart of Islamorada, Palm Paradise offers easy access to world-class fishing, boating, dining, and the laid-back luxury of the Florida Keys. Offered at $26.4M, Palm Paradise is a rare opportunity to own a private waterfront compound ideal for luxury living, family retreats, or executive escapes.

89505 Old Hwy, Tavernier
$25,000,000
609597 MLS
Introducing Enchanted Island, an unparalleled private island located 1.5 miles from Key West accessible via its own private highway exit from US 1. This rare real estate jewel offers an exclusive escape like no other. Presently zoned for sub urban residential use, the island permits the construction of up to two homes. Elevated 15 feet to meet construction codes and with building permits already secured, Enchanted Island is posed for your development aspirations. Additionally, the seller has completed engineered architectural plans for a 7,437 SF home. For those with a vision grander in scale, the option of rezoning and securing permits for up to ten homes exists, providing endless possibilities for your imagination. Enchanted Island boasts all essential utilities, including a new 1000A 120/240V power service, underwater sewer and power lines, and AT&T fiber connectivity. With building permits in hand, your journey from blueprint to building can commence without delay. Spanning an impressive 4 acres, Enchanted Island offers both tranquility and unique features, such as a private ocean reef and partial dredging, ideal for potential boat dock installation. In addition to its private highway access, the island has a history with helicopter use, hinting at the potential for establishing a heliport to further enhance its exclusivity and convenience for the distinguished few who will call it home or their luxury getaway. Enchanted Island seamlessly combines isolation with connectivity, offering a lifestyle statement for the discerning few. This exotic haven envisioned for the elite seeking not just a residence but a statement of lifestyle, stands ready to fulfill visions of grandeur against the breathtaking backdrop of the Florida Keys. Seize the unparalleled opportunity to turn your dream of island living into your reality with Enchanted Island.

1 Seppala Way, Key Haven
$24,995,000
7 Beds ⋅ 11 Baths ⋅ 619281 MLS
Experience unparalleled oceanfront living at the Chateau on the Ocean, a turnkey private estate set within an exclusive enclave in Islamorada. Here elevated coastal living reflects the sophistication of what has been referred to as the Hamptons of Miami. From the moment you arrive, a striking sense of privacy, scale, and intention is evident, with architecture and surroundings that feel truly unforgettable. Completely reimagined and newly constructed in 2023, this residence showcases exceptional modern design, engineering, and craftsmanship. Set on just under 2 acres of pristine coastline, the property offers 19,784 SF of total living and entertaining space, including 10,182 SF under air. Inside, soaring ceilings and walls of glass create a seamless indoor-outdoor connection, filling the interiors with natural light and highlighting refined, couture-level finishes. Amenities include a fitness center, indoor basketball and pickleball court, a Baccarat-inspired grand ballroom, and a custom Glamour Suite. Outdoors, a mosaic pool and spa overlook the Atlantic Ocean, complemented by alfresco dining, a firepit lounge, and multiple terraces with sweeping coastal views. A 300 inch outdoor LED theater and rooftop terrace elevate the experience. A 100ft private dock provides direct ocean access. Approved plans include 6 additional suites, including 2 oceanfront residences, allowing expansion into a multi-structure compound. A rare legacy estate defined by privacy, scale, and presence

82719 Old Hwy, Islamorada
$24,995,000
5 Beds ⋅ 8 Baths ⋅ 617705 MLS
Newly completed private oceanfront estate on 2+ acres in Plantation Key, offering an extraordinary combination of scale, privacy, dockage, and resort-style living in the heart of the Florida Keys. Designed for luxury coastal living, entertaining, and extended stays, this exceptional estate features over 9,000 sq. ft. of interior living space and more than 15,000 sq. ft. under roof. Set behind a gated entry, the residence offers 5 ensuite bedrooms, 5 full baths, 3 half baths, multiple flex spaces, an elevator, expansive covered porches, and seamless indoor-outdoor living. Additional luxury spaces include an in-home theater, private gym, and a massive office overlooking the ocean, all of which could easily serve as additional bedrooms, creating the potential for an 8-bedroom layout. The outdoor spaces are designed to showcase the Atlantic Ocean setting, with a resort-style pool, jacuzzi, generous lounging areas, and sweeping oceanfront views. Boaters will appreciate the 80-ft dock, 20,000 lb boat lift, and 160-ft jetty, creating outstanding access for enjoying the Keys lifestyle. With vacation rental zoning, the property also offers investment flexibility for those seeking personal use, income potential, or a legacy estate. Private oceanfront acreage of this scale is increasingly rare in the Upper Keys, making 87895 Old Hwy a standout opportunity for the buyer seeking a newly completed Florida Keys estate with privacy, presence, flexible living space, and exceptional waterfront amenities.

87895 Old Hwy, Islamorada
Start Your Search