Dorney Lake Triathlon
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Dorney Lake Triathlon - 3 October 2026
The Dorney Lake Triathlon takes place at Dorney Lake, Windsor, United Kingdom, on 3 October 2026. The event uses a purpose-built lake with calm open water and flat, traffic-free laps beside the lake.
Wide roads and paths form a flat road course, with chip-timed results provided to support accurate pacing. Marshals and clear wayfinding are present on course. An event village offers food and drink options and free race photos are included in the entry.
Distances offered include:
- Super Sprint: 400m swim, 9.5km bike (2 laps), 2.5km run
- Sprint: 750m swim, 19km bike (4 laps), 5km run
- Standard: 1500m swim, 38km bike (8 laps), 10km run
Elevation is listed as 20m for Super Sprint, 40m for Sprint, and 80m for Standard. Terrain for all courses is road. Aquabike entries and team relays are available as alternative race options. Age-based 'Open' categories and All Female categories are included for Sprint and Standard distances.
Entry benefits include a unique themed medal, chip-timed results, free race photos, and post-race goodies. The event is run as a partner event; RunThrough memberships may be used for entry, but there will be no member desk and member bibs cannot be used. If the event sells out, no additional places will be available, including for members. Visit the organization's website for the most recent information.
