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 2025/2026

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

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Man vs Coast is a 25-mile adventure run in Cornwall featuring natural obstacle challenges such as sea wades and coasteering for the adventurer who wants to make a weekend of it.
  • Sat 5 Jul
  • £160-£300
Marazion, Cornwall, UK

Rat Race | Man Vs Coast

Man vs Coast is a 25-mile adventure run in Cornwall featuring natural obstacle challenges such as sea wades and coasteering for the adventurer who wants to make a weekend of it.

  • 25 miles trail running
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