Tallinn to Pori Sea Distance Calculator

Calculate the exact nautical distance from Tallinn, Estonia to Pori, Finland. Plan your maritime journey with our professional route calculator.

Distance: 241.2 nm; nautical miles
Under Sail: 2 days; at 5 knots
Under Power: 24 hours; at 10 knots
Best Time: May-September; 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: 241.2 nautical miles

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This map shows the direct sea route from Tallinn to Pori. 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 60% longer than the 151 nm direct line, its heading turning from north to east. It is an international crossing between two countries.

Sea distance: 241.2 nm (446.8 km)
Direct line: 150.8 nm60% longer
Great-circle bearing: 326° (northwest)
Geographic extent: 2.0° × 4.0°
Crossing: Cross-border · Same region
From: Tallinn (Estonia) 59.4370, 24.7536
To: Pori (Finland) 61.4833, 21.8000
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	2 days
8 kn	30 hours
10 kn	24 hours
12 kn	20 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 Tallinn to Pori Route

Linking Tallinn and Pori, this multi-day coastal international crossing connecting two major commercial ports sits in the Northern Europe region — a passage shaped by persistent low cloud and reduced visibility on shoulder-season passages.

The lane links Tallinn (Estonia) and Pori (Finland), within the same maritime region.

Navigation Tips

•A multi-day coastal international passage in the Northern Europe region typically requires planning for persistent low cloud and reduced visibility on shoulder-season passages.
•A multi-day coastal leg in Northern Europe benefits from waypoint planning and verified fuel availability.
•Confirm operating hours and clearance procedures for this international crossing within the same maritime region, since rules vary by port.
•Verify that emergency equipment matches the demands of a multi-day coastal leg in Northern Europe.
•Documentation requirements differ for international passages within the same maritime region; verify cruising permits in advance.

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Frequently Asked Questions

How far is it from Tallinn to Pori by sea?

Approximately 241.2 nautical miles separate Tallinn and Pori by sea, making this a multi-day coastal leg in Northern Europe.

How long does it take to sail from Tallinn to Pori?

Expect about 1 day – 2 days for a multi-day coastal run of 241.2 nautical miles within the same maritime region.

What's the best time to sail from Tallinn to Pori?

Peak sailing season here is May-September; year-round, Northern Europe routes contend with persistent low cloud and reduced visibility on shoulder-season passages.

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