Run Dorney Lake Marathon
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Run Dorney Lake Half Marathon, 10k & 5k
The event takes place on Saturday 12 December 2026 at Dorney Lake, Windsor, in Buckinghamshire. It offers three road race distances on the purpose built rowing lake grounds used for the London 2012 Olympic rowing events. The course is flat and chip timed; organisers describe it as suitable for personal best attempts over the shorter distances.
Race formats and terrain:
- 5K: 1 lap on road, elevation 8 m
- 10K: 2 laps on road, elevation 15 m
- Half Marathon: 4 laps with a U-turn each lap on road, elevation 27 m
Entries are listed with tiered prices for each distance and an alternative RunThrough Foundation Place entry that does not require fundraising. Standard inclusions for entrants are a unique themed medal, free race photos, chip-timed results and post race goodies. The event features a serviced event village with food and drink options and marshals positioned around the course. Route maps and additional event logistics such as how to get there and spectator information are provided as part of the event materials. Visit the organization's website for the most recent information.
