Syros to Civitavecchia Sea Distance Calculator

Calculate the exact nautical distance from Syros, Greece to Civitavecchia, Italy. Plan your maritime journey with our professional route calculator.

Distance: 805.5 nm; nautical miles
Under Sail: 6.7 days; at 5 knots
Under Power: 3.4 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.

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Distance: 805.5 nautical miles

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

Passage details

This is a moderately indirect coastal passage: the navigable route runs 21% longer than the 667 nm direct line, its heading turning from southeast to east-southeast. It is an international crossing between two countries. By way of the Corinth Canal and the Strait of Messina.

Sea distance: 805.5 nm (1491.8 km)
Direct line: 667.1 nm21% longer
Great-circle bearing: 299° (west-northwest)
Sea area: Mediterranean Sea
Geographic extent: 4.8° × 13.3°
Crossing: Cross-border · Same region
Transits: Corinth Canal
Strait of Messina
From: Syros (Greece) 37.4385, 24.9421
To: Civitavecchia (Italy) 42.0937, 11.7948
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	6.7 days
8 kn	4.2 days
10 kn	3.4 days
12 kn	2.8 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 Syros to Civitavecchia Route

A long open-water cross-border sea route between Syros and Civitavecchia, this passage linking the mainland to an island anchorage in the Mediterranean region demands attention to conditions that shift with the season and locality, so consult an up-to-date marine forecast.

The corridor between neighbouring ports of the same region joins Syros, Greece to Civitavecchia, Italy.

Navigation Tips

•Plan this long open-water cross-border leg in the Mediterranean region with attention to conditions that shift with the season and locality, so consult an up-to-date marine forecast.
•Provisioning for this long open-water passage in Mediterranean 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 Mediterranean 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.

Suggested Stops

On a long 805.5 nm passage from Syros to Civitavecchia, these ports make convenient places to break the journey, refuel, and rest.

Zakynthos (Greece) · ≈225.8 nm in — View port details
Gioia Tauro (Italy) · ≈500.5 nm in — View port details

More Routes from Syros

Continue from Civitavecchia

Frequently Asked Questions

How far is it from Syros to Civitavecchia by sea?

This is a long open-water sea passage of about 805.5 nautical miles between Syros and Civitavecchia in Mediterranean.

How long does it take to sail from Syros to Civitavecchia?

Average voyage time on this long open-water between neighbouring ports of the same region leg of 805.5 nautical miles is 3.4 days – 6.7 days.

What's the best time to sail from Syros to Civitavecchia?

Aim for May-October for the calmest passage in Mediterranean; off-peak periods bring conditions that shift with the season and locality, so consult an up-to-date marine forecast.

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