Miami to Grand Cayman Sea Distance Calculator

Calculate the exact nautical distance from Miami, United States to Grand Cayman, Cayman Islands. Plan your maritime journey with our professional route calculator.

Distance: 715.6 nm; nautical miles
Under Sail: 6 days; at 5 knots
Under Power: 3 days; at 10 knots
Best Time: December-April; Typical Sailing Season

Distance follows a sea-lane route. Sailing times are estimates at fixed cruising speeds and vary with vessel, weather, and currents.

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Distance: 715.6 nautical miles

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This map shows the direct sea route from Miami to Grand Cayman. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a markedly indirect coastal passage: the navigable route runs 82% longer than the 392 nm direct line, its heading turning from east to northeast. It is an international crossing between two countries.

Sea distance: 715.6 nm (1325.3 km)
Direct line: 392.4 nm82% longer
Great-circle bearing: 189° (south)
Sea area: Caribbean Sea
Geographic extent: 6.6° × 5.4°
Crossing: Cross-border · Same region
From: Miami (United States) 25.7743, -80.1937
To: Grand Cayman (Cayman Islands) 19.3133, -81.2546
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	6 days
8 kn	3.7 days
10 kn	3 days
12 kn	2.5 days

Distance follows a sea-lane route generated from marine traffic lanes; passage times are computed at fixed cruising speeds.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Miami to Grand Cayman Route

A long open-water cross-border sea route between Miami and Grand Cayman, this passage linking the mainland to an island anchorage in the Caribbean region demands attention to short tropical squalls and afternoon thunderstorms.

The corridor between neighbouring ports of the same region joins Miami, United States to Grand Cayman, Cayman Islands.

Navigation Tips

•Plan this long open-water cross-border leg in the Caribbean region with attention to short tropical squalls and afternoon thunderstorms.
•Provisioning for this long open-water passage in Caribbean should account for regional supply networks.
•Allow time for entry formalities on this cross-border leg between neighbouring ports of the same region.
•Adapt safety equipment to Caribbean conditions for this long open-water crossing.
•For a cross-border crossing between neighbouring ports of the same region, ensure clearance papers and visas are in order before departure.