Fort Myers to Key West Route Calculator
Planning a boat trip from Fort Myers to Key West? The calculator above shows distance, travel time, and fuel consumption for this Gulf of Mexico route. It's the western approach to Key West — a scenic alternative to the Atlantic side with calm Gulf waters.
Distance from Fort Myers to Key West
The distance from Fort Myers to Key West is 114 nautical miles (131 statute miles or 211 kilometers) via the Gulf of Mexico. This route takes you along Florida's southwest coast, past the Ten Thousand Islands and Everglades National Park.
Unlike the Atlantic-side approach from Miami or Fort Lauderdale, the Gulf route offers typically calmer waters and avoids the Florida Keys' reef navigation. It's the route the Key West Express ferry takes daily.
The Gulf Route to Key West
The route heads south-southwest from Fort Myers Beach:
- Fort Myers Beach: Depart through Matanzas Pass or Big Carlos Pass
- Naples/Marco Island: Pass offshore (~30 nm from start)
- Ten Thousand Islands: Remote mangrove wilderness
- Cape Sable: Southernmost point of mainland Florida
- Marquesas Keys: Remote atoll west of Key West
- Key West: Enter via Northwest Channel
Navigation Notes
Most of this route is open Gulf water with depths of 20–40 feet. Key considerations:
- Shallow areas: Watch depths near Cape Sable and the Marquesas — shoals extend offshore
- No landmarks: Much of the route has no visible land — GPS essential
- Crab traps: Heavy concentration near shore — watch for floats
- Weather exposure: No shelter for 50+ miles — check forecast carefully
Travel Time to Key West
Trip times from Fort Myers:
- Fast sportfish (25–30 knots): 4–5 hours
- Express cruiser (18–20 knots): 6–7 hours
- Cruiser (12–15 knots): 8–10 hours
- Trawler (8–10 knots): 12–14 hours
- Key West Express ferry: 3.5 hours (high-speed catamaran)
💡 Pro Tip: The Gulf is typically calmest in the morning. Leave Fort Myers at dawn to maximize calm conditions and arrive with daylight to spare.
Key West Express Ferry
Don't have your own boat? The Key West Express operates daily ferry service from Fort Myers Beach to Key West:
- Duration: Approximately 3.5 hours
- Departure: Fort Myers Beach (also from Marco Island seasonally)
- Vessel: High-speed catamaran with air conditioning, food service
- Schedule: Typically morning departure, evening return
This is the only ferry service to Key West from Florida's Gulf Coast — a popular day-trip option for visitors.
Departing from Fort Myers
Marinas
- Salty Sam's Marina: Fort Myers Beach, close to Matanzas Pass
- Pink Shell Marina: Full service, fuel available
- Legacy Harbour Marina: Downtown Fort Myers, on Caloosahatchee River
- Gulf Harbour Marina: Large facility north of Fort Myers Beach
Fuel Stops
Important: There are NO fuel stops between Fort Myers and Key West on the Gulf route. Naples and Marco Island are your last chance before 80+ miles of open water. Make sure you have adequate fuel with 25% reserve.
Arriving in Key West
Approach
From the Gulf, enter Key West via the Northwest Channel — well-marked and deep. You'll pass the Marquesas Keys and approach Key West from the west, giving you beautiful sunset views on arrival.
Marinas
- Key West Bight Marina: Heart of downtown, walk to Duval Street
- Galleon Marina: Full service, pool, great location
- Stock Island Marina: More affordable, 10 min from downtown
- Key West Harbour: Large slips, good amenities
What to Do
Key West has it all: sunset at Mallory Square, Duval Street nightlife, Hemingway Home, snorkeling trips to the reef, fishing charters, and the Southernmost Point marker. Plan at least 2–3 days to explore.
⚠️ Open Water Passage: No fuel or shelter for 80+ miles. Check weather carefully — Gulf squalls can develop quickly. Carry 1.5× expected fuel, working VHF, GPS, and file a float plan. Consider EPIRB for extended offshore runs.
Frequently Asked Questions
How far is Key West from Fort Myers by boat?
114 nautical miles (131 statute miles / 211 km) via the Gulf of Mexico.
How long is the boat ride from Fort Myers to Key West?
5–12 hours depending on speed. Cruisers at 12 knots take about 9.5 hours. The Key West Express ferry does it in 3.5 hours.
Is there a ferry from Fort Myers to Key West?
Yes! Key West Express runs daily from Fort Myers Beach. About 3.5 hours each way on a high-speed catamaran.
Can I do it in one day?
Yes, with a boat capable of 15+ knots. Leave early morning, arrive late afternoon. Slower boats should plan an overnight or consider the ferry.
Is the Gulf route easier than the Atlantic route?
Generally calmer water, but longer exposure with no shelter. Atlantic route (via Keys) has more stops but reef navigation. Choose based on weather and your boat.
Related Routes
More ways to reach Key West:
- Miami to Key West — 140 nm (Atlantic side)
- Fort Lauderdale to Key West — 156 nm (Atlantic side)
- Marathon to Key West — 50 nm
- Key West to Dry Tortugas — 68 nm
- Naples to Key West — 95 nm (Gulf side)