Ultra swimruns

Ultra swimruns

Amphibious ultra running in spectacular locations!

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Ultra swimruns in the UK

Often encompassing more than 75K and even spanning over two days, ultra-distance swimruns can be a proper endurance challenge. Originating with the ÖtillÖ (Swedish for "island-to-island") Series, this event type now appears on the coast, along rivers and around lochs. Select your location for ultra swimruns in your area or scroll down to see events coming up.

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Ultra swimruns in 2024/2025

Featured events are listed below - select your region to see all events.

3 run legs and 4 swim legs totaling 16.5 miles is the long swimrun event of the Something Wild Festival, from the beautiful coastal venue of Hope Cove.
  • Sat 31 Aug
  • £40-£55
Kingsbridge, Devon, UK

Rocky Horror SwimRun | Long

3 run legs and 4 swim legs totaling 16.5 miles is the long swimrun event of the Something Wild Festival, from the beautiful coastal venue of Hope Cove.

  • 2000 m sea swimming
  • 15 miles trail running
  • Sun 22 Sep
  • £225
Coniston, Cumbria, UK

Swimrun Coniston | Full course

A swimrun adventure through the stunning forests, lakes and fells of the Lake District National Park. Book your place today and join as a team or solo this September!

  • 6.5 km lake swimming
  • 38.7 km trail running + 1050 m ascent