555 - Isles of Scilly
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555 - 2026 Marathons, Half's and Loops
The event is a multi-day trail running series on the Isles of Scilly from 4 to 8 October 2026. Participants can enter single days or the full five-day sequence across multiple islands.
There are three distance options:
- Marathon : five marathons total 211 km
- Half Marathon : five half marathons total 106 km
- Island Loops : five island loops approx total 55 km
Distances are approximate and participants may cover slightly further than listed. The islands included are St Martin's, Tresco, Bryher, St Agnes and St Mary's; the order of islands may change due to weather.
Each day uses clearly marked island loops and a dry indoor venue on each island provides the start and finish area with access to toilets, hot and cold water, and shelter. Runners may leave a kit bag with personal food and fuel at the start point to access between loops. All tickets include boat transfers to and from each island each day; this does not include spectators. Participants who register for all five days receive a framed jigsaw background for their medals, with an option to upgrade to a personalised frame, and receive celebratory food at the after party.
Entry prices vary by booking period: early bird, standard from 5 January, and late from 1 June, with per-day and all-five-day pricing tiers. Visit the organization's website for the most recent information.
