Thames Ring Series

Goring, United Kingdom • 22 Apr 2026

Thames Ring Series

The Thames Ring Series is a multi-distance trail event based at the Morrell Rooms, Streatley-on-Thames. The route forms an anti-clockwise loop from Streatley, following the Thames, the Grand Union Canal and the Oxford Canal before returning to the start. The course runs almost entirely on canal and riverside towpaths with stretches of rural footpath and some urban sections; overall it is relatively flat.

Distances available

  • TR250 about 250 miles (route closer to 256 miles)
  • TR150 about 150 miles (route closer to 158 miles)
  • TR100 100 mile route

Cutoff durations are strict: the full distance has 100 hours, the 150 has 53 hours and the 100 has 34 hours. Navigation is by provided maps and GPX files; final maps and GPX files are published in the race packs before the event. All runners are tracked using GPS trackers and checkpoints are sited roughly every 25 miles. Facilities at the start, finish and several checkpoints include toilets, changing and indoor sleeping; sleeping tents and hot and cold food are available at a number of outdoor checkpoints on the longer races.

Support rules require runners to be self supported between checkpoints. Only one drop bag up to 20 kg is permitted for TR250 and TR150 and a single drop bag is available for TR100 at the designated CP. Pacers and outside support between checkpoints are not permitted. Compulsory kit includes at least 1 litre of fluids, full waterproof top and bottoms, a hat or buff, a charged mobile phone and a head torch of minimum 100 lumens. Visit the organization's website for the most recent information.

Race information

250 mi
Tr250
150 mi
Tr150
100 mi
Tr100
Visit the organization's website for the most recent information.
Trail runs nearby

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