Dorney Lake Triathlon
Always double-check with the organizer's website! This page may contain affiliate links.
Dorney Lake Triathlon - 26 July 2026
The event takes place at Dorney Lake, an Olympic venue with a purpose-built lake and flat surrounding grounds. The venue is set up for open-water swims and flat road cycling and running, and the event uses chip-timed results. The triathlon is listed as supporting Macmillan Cancer Support, who are a partner for the event.
Race options include individual distances, an Aquabike (swim-bike) entry, and relay teams of two or three people sharing disciplines.
- 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
Course notes state road terrain for all distances, with listed elevation gains of 20m for Super Sprint, 40m for Sprint, and 80m for Standard. Each discipline is marked with distance flags and event staff are present to guide competitors on course.
Entry benefits include a themed medal, free race photos, chip-timed results, and post-race goodies. The event features marshals, an event village with food and drink options, and partner giveaways. Sustainability is noted as a priority for the organiser. RunThrough memberships may be used for entry, but no additional places will be released once the event sells out; there will be no member desk and member bibs cannot be used at this event. Visit the organization's website for the most recent information.
