Dubrovnik to Marseille Sea Distance Calculator

Calculate the exact nautical distance from Dubrovnik, Croatia to Marseille, France. Plan your maritime journey with our professional route calculator.

Distance: 991.4 nm; nautical miles
Under Sail: 8.3 days; at 5 knots
Under Power: 4.1 days; at 10 knots
Best Time: May-October; Typical Sailing Season

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

Interactive Route Map

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Distance: 991.4 nautical miles

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This map shows the direct sea route from Dubrovnik to Marseille. 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 77% longer than the 560 nm direct line, its heading turning from west-southwest to east-southeast. It is an international crossing between two countries. Transiting the Strait of Messina.

Sea distance: 991.4 nm (1836.1 km)
Direct line: 559.8 nm77% longer
Great-circle bearing: 278° (west)
Sea area: Mediterranean Sea
Geographic extent: 5.4° × 13.7°
Crossing: Cross-border · Same region
Transits: Strait of Messina
From: Dubrovnik (Croatia) 42.6507, 18.0944
To: Marseille (France) 43.2965, 5.3698
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	8.3 days
8 kn	5.2 days
10 kn	4.1 days
12 kn	3.4 days

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

Named transits are identified from the sea-lane waypoint path.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Dubrovnik to Marseille Route

The maritime route from Dubrovnik to Marseille is a long-haul ocean cross-border passage linking commerce and cruise traffic in the Mediterranean region. Mariners on this leg typically prepare for conditions that shift with the season and locality, so consult an up-to-date marine forecast.

This route runs between neighbouring ports of the same region, connecting Dubrovnik in Croatia with Marseille in France.

Navigation Tips

•On this long-haul ocean cross-border crossing in the Mediterranean region, prepare for conditions that shift with the season and locality, so consult an up-to-date marine forecast, particularly in peak season.
•For a long-haul ocean route, plan fuel and provisioning around the Mediterranean region — calculate consumption with our tool.
•Verify port-entry requirements at both ends of this cross-border route between neighbouring ports of the same region before you depart.
•Check safety gear suited to Mediterranean conditions before a long-haul ocean passage — life rafts, EPIRB, and current charts.
•Carry passports, vessel documents, and crew lists matched to this cross-border route between neighbouring ports of the same region.

Suggested Stops

On a long 991.4 nm passage from Dubrovnik to Marseille, these ports make convenient places to break the journey, refuel, and rest.

Messina (Italy) · ≈390.5 nm in — View port details
Golfo Aranci (Italy) · ≈743 nm in — View port details

More Routes from Dubrovnik

Continue from Marseille

Frequently Asked Questions

How far is it from Dubrovnik to Marseille by sea?

The sea distance from Dubrovnik to Marseille is approximately 991.4 nautical miles — a long-haul ocean passage in Mediterranean.

How long does it take to sail from Dubrovnik to Marseille?

A long-haul ocean between neighbouring ports of the same region crossing of 991.4 nautical miles typically takes 4.1 days – 8.3 days, depending on vessel and weather.

What's the best time to sail from Dubrovnik to Marseille?

The best time for this route in Mediterranean is May-October, when conditions are most favourable; expect conditions that shift with the season and locality, so consult an up-to-date marine forecast outside that window.

Plan Your Perfect Maritime Journey

Use our advanced calculator above to customize your route, add waypoints, calculate fuel costs, and share your journey plan with crew members.

Plan another route with our Sea Distance Calculator Navigation Guide