Blackwater Marathon
Heybridge, United Kingdom • 25 Oct 2025
Event details
The Blackwater Marathon 2025 is scheduled for 25 October 2025 at Drapers Farm Sports Club, Drapers Chase, Heybridge, Essex CM9 4QT. The event offers two courses:
- 26.5 miles
- 18 miles
Entries open 1 July 2025 and close 19 October 2025, or earlier if the entry limit of 175 is reached. Entry fees are £16 for LDWA members and £24 for non-members. Entries are not transferable. Cancellations before 10 October 2025 incur a £5 administration fee; no refunds are given for cancellations after 10 October 2025 unless the event is cancelled. There were 140 participants entered at the time of this listing.
Course and logistics
The routes form circular courses on the north side of the River Blackwater estuary, using cross country footpaths and sections of seawall. The long route has 3 checkpoints; the short route has 2 checkpoints. Route descriptions and .gpx files will be available on the Essex & Herts LDWA website before the event; no printed route descriptions will be available at the event. The entry fee includes refreshments at the start, snacks at checkpoints, a light meal at the finish, and a certificate for finishers. Participants should bring the route description, a mug for checkpoint drinks, a compass and a torch. No dogs are allowed on the route or at checkpoints, except assistance dogs. Parking is at Maldon Rugby Club carpark, Scrailey Road, Heybridge CM9 8JA. The event is part of the Essex & Herts Triple Challenge. Visit the organization's website for the most recent information.