Thames Ring Series
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Thames Ring Series
The Thames Ring Series is a multi distance trail event held 21 to 25 April 2027, based at the Morrell Rooms, Streatley on Thames, RG8 9JA.
- 250 mile route, approximately 256 miles
- 150 mile route, approximately 158 miles
- 100 mile route, around 98 miles
The route is an anti clockwise loop from Streatley along the River Thames, the Grand Union Canal and the Oxford Canal before returning to the start. The course runs mostly on canal towpaths and riverside footpaths and is relatively flat while requiring sustained endurance.
Navigation and tracking are provided. GPX files and maps are supplied in the race packs and final maps are published close to the event. All runners are tracked by GPS trackers that include an emergency SOS function. Checkpoints are sited roughly every 25 miles and offer basic hot and cold food, drinks and, at some locations, indoor facilities and sleeping tents.
Time limits for each distance are set: 100 hours for the 250, 53 hours for the 150 and 34 hours for the 100. Cutoffs at individual checkpoints are strictly enforced.
Logistics and rules include one drop bag up to 15 kg for 250 and 150 runners, a single drop bag access point for 100 runners at Lower Heyford, no outside support except at checkpoints, and no pacers. Mandatory kit includes at least 1 litre of fluids capacity, full waterproof top and bottoms, hat or buff, sufficient food, a charged mobile phone and a head torch of minimum 100 lumens. Entrants must be 18 or over. Entry uses dynamic pricing with lower early prices for the first 15 places and entries close on 1 April 2027. Only finishers receive a medal. Visit the organization's website for the most recent information.
