Thames Ring Series
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Thames Ring Series 2027
The Thames Ring Series is a multi distance trail event based at the Morrell Rooms, Streatley-on-Thames, RG8 9JA, running over 21–25 April 2027. The full route for the longest race is an anti-clockwise loop from Streatley along the Thames, up the Grand Union Canal and back via the Oxford Canal, mostly on canal and riverside paths and described as relatively flat.
Distances and time limits:
- TR250 roughly 250 miles (around 256) with a 100 hour limit.
- TR150 roughly 150 miles (about 158) with a 53 hour limit.
- TR100 roughly 100 miles (around 98) with a 34 hour limit.
The route is marked with checkpoints approximately every 25 miles. Navigation materials include GPX files and printed maps provided in the race pack; final maps and GPX files are published close to the event and last year’s files can be used for planning. All runners are tracked with GPS trackers that include an emergency SOS function and use Open Tracking.
Facilities at the start, finish and some checkpoints include toilets, changing and indoor sleeping; several outdoor checkpoints are near pubs and some offer food and sleeping tents. Drop bag rules and kit requirements are specified: runners must carry at least 1 litre of fluids, full waterproof top and bottoms, hat or buff, sufficient food, a charged mobile phone and a head torch of minimum 100 lumens. Support is restricted to checkpoint locations and pacers are not permitted. Entry is open only to those aged 18 or over. Visit the organization's website for the most recent information.
