route GPX St Mary's 16km

Swimrun in Paradise

Scilly Swimrun 2026

Scilly Swimrun hosts the UK’s Only True Inter-Island Swimrun Events. 

When Mats and Micheal, the founders of swimrun racing discovered The Isles of Scilly, they called it the Swimrun Paradise! 

Thursday 27th August. St Mary’s, 8km and 16km.

This classic Scilly Swimrun course is either a full or half circumnavigation of our largest island, St Mary’s

Experience real adventure in one of the most spectacular locations in the world.

Don’t forget to check out all the other swimruns over the weekend

Thursday 27 August – St Mary’s Courses

St Mary’s Half Course – 8 km

Ideal for beginners and intermediate swimrunners.

Solo: £65 Early Bird.  £70 from 1st Feb.  £75 from 1st May.

Pairs: £110 Early Bird.  £120 from 1st Feb.  £140 from 1st May.

St Mary’s Full Course – 16 km

A classic Scilly Swimrun challenge around the largest island.

  • Solo: £110 Early Bird. £120 from 1st Feb. £130 from 1st May.

  • Pairs: £180 Early Bird. £200 from 1st Feb. £220 from 1st May.

Whether you're a seasoned athlete, an adventure seeker, or a first-time swimrunner, this course offers two amazing adventures of swimrunning on Scilly.

Enter the St Mary's 8 or 16km Swimrun event here
8km time and distance chart.
16km time and distance chart.

Mandatory Kit

  • Wetsuit – (NOT a Trisuit!)

  • Whistle, easily accessible.

  • Foldable cup/soft flask

Optional Kit

  • Pull bouy / calf floats.

  • paddles

  • Tether (bungee to join pairs together)

route GPX St Mary's 8km

Why Scilly Swimrun?

  • The only UK swimrun with authentic inter-island swimming

  • Courses featuring full island circumnavigations

  • Stunning routes through an Area of Outstanding Natural Beauty

  • Crystal-clear waters, rugged coastlines, and iconic island scenery

  • A welcoming community atmosphere with events for adults, juniors, and first-timers