Five Rivers Ultra

MAY
16-17
2026
Run a scenic point to point trail from Dedham Vale to Harwich through coastal estuaries and Areas of Outstanding Natural Beauty, with 100 mile, 50 mile and 50 km options. Mostly flat grass and trail, UTMB 100M index event.
16-17 May 2026
100 miles 50 miles 50 kilometers

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Event overview

The Five Rivers Ultra is a point-to-point trail event held 16–17 May 2026, organised by Coastal Trail Runners. The finish location is Harwich, Cow Lane, Suffolk, CO12 3ER. The route passes through the Dedham Vale and Suffolk Coast & Heaths Areas of Outstanding Natural Beauty and links sections of waymarked long-distance footpaths, including parts of the King Charles III England Coast Path. The event is held under licence of England Athletics and the Trail Running Association and is a UTMB 100M index event.

Race details

Distances offered:

  • 100 miles
  • 50 miles
  • 50 km

The course is largely flat and more than 85% on grass or dirt trail. The full 100 mile route circumnavigates five coastal estuaries. Routes are self-navigated using named footpaths with GPX downloads provided. Race services include drop-bag facilities, indoor checkpoints with tea, coffee and hot food, tracking via Open Tracking, and a tech t-shirt and a finisher's memento for finishers. Additional arrangements include optional limited hostel beds for 100 mile entrants on the night before the event, optional buses to the start for 100 mile entrants from Harwich, and a rest area with bunk beds and hot food at the finish. Entries open 12 May 2025 and close 27 April 2026. Minimum age is 20. Entry fees vary by distance and date. Entries recorded so far: 63 participants. Visit the organization's website for the most recent information.

100 mi
100 Miles
50 mi
50 Miles
50 km