Riga to Sankt Peterburg Sea Distance Calculator

Calculate the exact nautical distance from Riga, Latvia to Sankt Peterburg, Russia. Plan your maritime journey with our professional route calculator.

Distance: 446.1 nm; nautical miles
Under Sail: 3.7 days; at 5 knots
Under Power: 45 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.

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Distance: 446.1 nautical miles

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This map shows the direct sea route from Riga to Sankt Peterburg. 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 69% longer than the 264 nm direct line, its heading turning from north-northwest to east. It is an international crossing between two countries.

Sea distance: 446.1 nm (826.1 km)
Direct line: 264.4 nm69% longer
Great-circle bearing: 45° (northeast)
Geographic extent: 3.2° × 7.7°
Crossing: Cross-border · Same region
From: Riga (Latvia) 56.9496, 24.1052
To: Sankt Peterburg (Russia) 59.9333, 30.3000
Route basis: Sea-lane route

Passage timeEstimated passage time by cruising speed
Cruising speed	Duration
5 kn	3.7 days
8 kn	2.3 days
10 kn	45 hours
12 kn	37 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 Riga to Sankt Peterburg Route

A medium ocean international sea route between Riga and Sankt-Peterburg, this passage connecting two major commercial ports in the Northern Europe region demands attention to tidal streams and seasonal ice in the higher latitudes.

The corridor within the same maritime region joins Riga, Latvia to Sankt-Peterburg, Russia.

Navigation Tips

•Plan this medium ocean international leg in the Northern Europe region with attention to tidal streams and seasonal ice in the higher latitudes.
•Provisioning for this medium ocean passage in Northern Europe should account for regional supply networks.
•Allow time for entry formalities on this international leg within the same maritime region.
•Adapt safety equipment to Northern Europe conditions for this medium ocean crossing.
•For a international crossing within the same maritime region, ensure clearance papers and visas are in order before departure.

More Routes from Riga

Frequently Asked Questions

How far is it from Riga to Sankt Peterburg by sea?

This is a medium ocean sea passage of about 446.1 nautical miles between Riga and Sankt Peterburg in Northern Europe.

How long does it take to sail from Riga to Sankt Peterburg?

Average voyage time on this medium ocean within the same maritime region leg of 446.1 nautical miles is 1.9 days – 3.7 days.

What's the best time to sail from Riga to Sankt Peterburg?

Aim for May-September for the calmest passage in Northern Europe; off-peak periods bring tidal streams and seasonal ice in the higher latitudes.

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