Fethiye to Kos Sea Distance Calculator

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

Distance
172.8 nm
nautical miles
Under Sail
35 hours
at 5 knots
Under Power
17 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: 172.8 nautical miles
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This map shows the direct sea route from Fethiye to Kos. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a markedly indirect inter-island route: the navigable route runs 93% longer than the 89 nm direct line, its heading turning from southeast to southwest. It is an international crossing between two countries.

Sea distance
172.8 nm (320.1 km)
Direct line
89.4 nm93% longer
Great-circle bearing
281° (west)
Sea area
Mediterranean Sea
Geographic extent
0.8° × 2.3°
Crossing
Cross-border · Same region
From
Fethiye (Turkey) 36.6215, 29.1164
To
Kos (Greece) 36.8916, 27.2877
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn35 hours
8 kn22 hours
10 kn17 hours
12 kn14 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 Fethiye to Kos Route

The maritime route from Fethiye to Kos is a day-passage cross-border passage on a coastal route 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 Fethiye in Turkey with Kos in Greece.

Navigation Tips

  • •On this day-passage 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 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.

Frequently Asked Questions

How far is it from Fethiye to Kos by sea?

The sea distance from Fethiye to Kos is approximately 172.8 nautical miles — a day-passage passage in Mediterranean.

How long does it take to sail from Fethiye to Kos?

A day-passage between neighbouring ports of the same region crossing of 172.8 nautical miles typically takes 17 hours – 35 hours, depending on vessel and weather.

What's the best time to sail from Fethiye to Kos?

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.

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