Stockholm to Pori Sea Distance Calculator

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

Distance: 231.5 nm; nautical miles
Under Sail: 46 hours; at 5 knots
Under Power: 23 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: 231.5 nautical miles

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This map shows the direct sea route from Stockholm to Pori. 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 36% longer than the 170 nm direct line, its heading turning from east-northeast to east. It is an international crossing between two countries.

Sea distance: 231.5 nm (428.8 km)
Direct line: 170.1 nm36% longer
Great-circle bearing: 39° (northeast)
Geographic extent: 2.2° × 3.7°
Crossing: Cross-border · Same region
From: Stockholm (Sweden) 59.3293, 18.0686
To: Pori (Finland) 61.4833, 21.8000
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	46 hours
8 kn	29 hours
10 kn	23 hours
12 kn	19 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 Stockholm to Pori Route

The maritime route from Stockholm to Pori is a overnight offshore international passage connecting two major commercial ports in the Northern Europe region. Mariners on this leg typically prepare for North Sea gales and short steep seas in winter.

This route runs within the same maritime region, connecting Stockholm in Sweden with Pori in Finland.

Navigation Tips

•On this overnight offshore international crossing in the Northern Europe region, prepare for North Sea gales and short steep seas in winter, particularly in peak season.
•For a overnight offshore route, plan fuel and provisioning around the Northern Europe region — calculate consumption with our tool.
•Verify port-entry requirements at both ends of this international route within the same maritime region before you depart.
•Check safety gear suited to Northern Europe conditions before a overnight offshore passage — life rafts, EPIRB, and current charts.
•Carry passports, vessel documents, and crew lists matched to this international route within the same maritime region.

More Routes from Stockholm

Frequently Asked Questions

How far is it from Stockholm to Pori by sea?

The sea distance from Stockholm to Pori is approximately 231.5 nautical miles — a overnight offshore passage in Northern Europe.

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

A overnight offshore within the same maritime region crossing of 231.5 nautical miles typically takes 23 hours – 46 hours, depending on vessel and weather.

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

The best time for this route in Northern Europe is May-September, when conditions are most favourable; expect North Sea gales and short steep seas in winter 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