Distances run from sprint events under 10 km to the 75 km ÖTILLÖ World Championship. Most races are pairs only, tethered by a 10-metre line.
Filter by total distance and longest single swim: a 5 km open-water leg with no wetsuit-only rule is a very different proposition from twenty short island hops.
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Swimrun: frequently asked questions
What is swimrun?
Swimrun is a team-of-two discipline where partners cover a course of alternating open-water swims and trail runs without changing kit: you swim in your running shoes and run in your wetsuit. It began as the ÖTILLÖ race in the Stockholm archipelago and has since spread to Croatia, the UK, France, and beyond. Pairs are usually tethered together by a short line for the whole race.
Do you race swimrun solo or in pairs?
The vast majority of swimrun races are pairs-only, with the two athletes tethered by roughly a ten-metre line and staying together throughout. Some events offer a solo category, but the format was designed around teamwork and shared decision-making. Check each race page for whether a solo option exists.
What distances do swimrun races cover?
Swimrun events range from sprint races under 10 km of combined distance to the 75 km ÖTILLÖ World Championship. What matters as much as the total is the longest single swim leg, which can exceed a kilometre in open water. Filter by total distance and check the longest swim before entering.
What gear do I need for swimrun?
Swimrun uses specialist kit worn for both disciplines: a swimrun wetsuit, trail shoes that drain, hand paddles, a pull buoy, and the tether that links the pair. You never stop to change, so everything has to work in the water and on the trail. Many first-timers rent or borrow the specialist pieces for their first event.