555 - Isles of Scilly
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About the race
The 555 is a multi-day trail running event on the Isles of Scilly, United Kingdom, taking place 8–12 October 2027 and organised by Scilly60 Events. The programme runs over five islands with one running day on each island: St Martin’s, Tresco, Bryher, St Agnes and St Mary’s. Participants can enter for single days or for all five days.
There are three distance formats to choose from, and entrants may change their distance on a day-by-day basis:
- Loops : one single loop of each island.
- Half Marathon : a half marathon on each island (often about two loops).
- Marathon : a marathon on each island (often about four or five loops).
Typical loop distances by island are approximately:
- St Martin’s : 10 km per loop.
- Tresco : 10 km per loop.
- St Agnes : 9 km per loop.
- Bryher : 8 km per loop.
- St Mary’s : 17 km per loop.
All participant tickets include boat transfers to and from each island; spectator transfers are not included. The course is fully marked with bright orange flags. Each island base provides a dry indoor start/finish area with toilets, hot and cold water and shelter, and runners may leave a kit bag to access between loops. Distances are approximate and may vary. Visit the organization's website for the most recent information.
