Course
An anti-clockwise loop from Streatley-on-Thames: east along the Thames, north up the Grand Union Canal, then back down the Oxford Canal to the start. Mainly rural towpaths and footpaths with some urban stretches. Nine checkpoints roughly every 25 miles provide food, toilets, sleeping tents and medical cover, the larger ones indoors with hot meals.
Key dates
- !RegistrationOpen now
- !Entries closeThu 1 Apr 2027 · in 23 weeks
- ★Race dayWed 21 Apr 2027
About
The Thames Ring 250 is an iconic 250-mile trail race through the heart of the United Kingdom. Starting and finishing in the charming village of Streatley-on-Thames, this challenging event takes runners along the banks of the River Thames, offering stunning views and a true test of endurance. Whether you're an experienced ultrarunner or looking for your next big adventure, the Thames Ring 250 promises an unforgettable journey through the British countryside.
Save Thames Ring 250 to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.