PURESISU events

PURESISU from Finnish Lakeland

Welcome to PURESISU events, where the beauty of nature meets the way you move.

Puruvesi Swim 27.6.2026

Sport: Open water swimming
Route: Around the Petrisaari nature reserve in the exceptionally clear waters of Lake Puruvesi
Distances: 2.5 km, 5 km, 10 km

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Punkaharju Swim 22.8.2026

Sport: Open water swimming
Route: In the clear waters of Punkaharju, part of one of the world’s oldest nature reserve areas
Distances: 1 km, 2 km, 4 km

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Punkaharju Swimrun 29.8.2026

Sport: Swimrun
Route: Eg. forest trails, ridge landscapes, clear waters.
Distances: 10.5 km (1.9 km swimming) and 20.4 km (3.2 km)

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Run Forest Run 29.8.2026

Sport: Trail running
Route: Through the Punkaharju research forest and nature reserve, featuring Finland’s tallest tree and other unique natural highlights
Distances: 10.2 km, 17.7 km

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In the heart of Saimaa. Built on clear waters and forest terrain.

Every step, stroke and moment in nature contributes to well-being. In PURESISU events, physical activity meets the beauty of nature in Finnish Lakeland, in the landscapes of Savonlinna and Punkaharju.