Thames Ring 250

The Thames Ring 250 is an iconic long-distance race covering over 250 miles, starting from Goring and looping along the River Thames into London, then up the Grand Union Canal and down the Oxford Canal back to the finish. First held in 2009, it presents a significant challenge with a high DNF rate, requiring participants to complete the course within 100 hours. Runners encounter well-stocked checkpoints every 25 miles, with options for rest.

The event includes tracking, first aid support, and offers merchandise. Finishers receive a unique and heavy medal, making it a memorable experience for all participants. Visit the organization's website for the most recent information.