Syros to Marmaris Sea Distance Calculator

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

Distance: 195.4 nm; nautical miles
Under Sail: 39 hours; at 5 knots
Under Power: 20 hours; 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: 195.4 nautical miles

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

Passage details

This is a moderately indirect inter-island route: the navigable route runs 20% longer than the 163 nm direct line, its heading turning from south-southeast to north-northeast. It is an international crossing between two countries.

Sea distance: 195.4 nm (361.8 km)
Direct line: 163.1 nm20% longer
Great-circle bearing: 101° (east-southeast)
Sea area: Aegean Sea
Geographic extent: 0.9° × 3.4°
Crossing: Cross-border · Same region
From: Syros (Greece) 37.4385, 24.9421
To: Marmaris (Turkey) 36.8511, 28.2700
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	39 hours
8 kn	24 hours
10 kn	20 hours
12 kn	16 hours

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 Syros to Marmaris Route

The maritime route from Syros to Marmaris is a day-passage cross-border passage on a coastal route in the Mediterranean region. Mariners on this leg typically prepare for the northerly Meltemi of high summer, which can raise short, steep seas.

This route runs between neighbouring ports of the same region, connecting Syros in Greece with Marmaris in Turkey.

Navigation Tips

•On this day-passage cross-border crossing in the Mediterranean region, prepare for the northerly Meltemi of high summer, which can raise short, steep seas, particularly in peak season.
•For a day-passage 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 day-passage 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.

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Frequently Asked Questions

How far is it from Syros to Marmaris by sea?

The sea distance from Syros to Marmaris is approximately 195.4 nautical miles — a day-passage passage in Mediterranean.

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

A day-passage between neighbouring ports of the same region crossing of 195.4 nautical miles typically takes 20 hours – 39 hours, depending on vessel and weather.

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

The best time for this route in Mediterranean is May-October, when conditions are most favourable; expect the northerly Meltemi of high summer, which can raise short, steep seas 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.

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