Royal Windsor Triathlon
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Royal Windsor Triathlon and 10K, Sunday 14 June 2026
The event takes place at Alexandra Gardens, Windsor SL4 1RF, and is delivered by RunThrough as the official event delivery partner. Multiple race formats are offered on the same day, including triathlon distances, relay options and a standalone 10K.
The triathlon includes an open water swim in the River Thames, a road cycle through Windsor passing Windsor Castle and into the surrounding countryside, and a run that enters Windsor Great Park along the Long Walk. The 10K starts riverside at Alexandra Gardens and follows a route that leads into Windsor Great Park.
Race distances
- Sprint Triathlon: 750 m swim, 20 km bike, 5 km run
- Standard Triathlon: 1500 m swim, 40 km bike, 10 km run
- 10K road run Relay entries are open only to teams of three participants. Some triathlon options include Sunday racking.
Entries include a unique themed medal, free race photos and chip timed results. Each kilometre is marked with distance flags and marshals guide the course. A separate race day pass is required and prices vary by distance and booking period. Event facilities include a race village with food and drink options and partner giveaways at the finish.
The event has been awarded British Triathlon Federation Event of the Year seven times. Visit the organization's website for the most recent information.
