BigSea Trails (WATER)

JUN
7
2026
Explore the Purbeck coast with BigSea Trails WATER, a single lap trail that starts on Knoll Beach and takes in Corfe Castle, Kimmeridge Bay and Old Harry Rocks. Expect rugged coastal scenery and varied terrain for a memorable day on the trails.
Sun 7 Jun 2026
54 kilometers Marathon 18 miles Half Marathon

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Event overview

BigSea Trails (WATER) is the second event in the Classic Element Trail Series on the Isle of Purbeck, Dorset. The event starts and finishes on the sand of Knoll Beach and uses single-lap routes that pass through the Purbeck Hills, Corfe Castle, Kimmeridge Bay, Chapmans Pool, Dancing Ledge, Durlston Castle and Old Harry Rocks. The races are trail runs held on marked courses.

Distances, logistics and services

  • Half Marathon - £36
  • 18 Miles - £44
  • Marathon - £52
  • 54k Ultramarathon - £64

Race bibs are collected from registration on the day. A bag drop tent will be available. All runners must carry at least 500 ml of fluid; hydration vests or handheld soft flasks are permitted. Runners are advised to carry appropriate clothing for changeable weather and to download the GPX file of the route, as course arrows can be tampered with.

Cut off times: Half Marathon and 18 Mile - 5 hours; Marathon and 54k - 9 hours. Aid stations will be well stocked with sweet and savoury snacks, vegan options, water and flat coke; the event operates as a cupless event. Aid stations will offer PH 1000 electrolyte drink and assorted gels and snacks. Event T-shirts are available to pre-order and can be collected at Event HQ. Runners may opt to have a tree planted instead of receiving a finisher medal. Visit the organization's website for the most recent information.

54 km
54k Ultramarathon
Marathon
Marathon
18 mi
18 Miles
Half Marathon
Half Marathon

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