Swim Calendar
Every European open-water swim race we track — from short lake swims to ultra-marathon crossings.
Open water swimming is competitive or recreational swimming in lakes, rivers, seas and other natural bodies of water — distinct from pool swimming.
It depends on each race's rules and the water temperature. Each race page on Race the Water lists the wetsuit policy and expected water temperature.
European open-water events range from short 1–2km swims for beginners to 5km, 10km Olympic-distance, and ultra 25km+ marathon swims.
The main European open-water season runs from May to September, with a few cold-water and ice-swimming events in winter months.