11th - 12th September 2021

We welcome competitors and spectators every year to the stunning surroundings of Blenheim Palace to take part in one of the most spectacular triathlons in Europe, set against the backdrop of a World Heritage Site.

General entries for the 2021 event are currently sold out. Entries are still available through Cancer Research UK and you can apply through their website.

Spectator tickets for Blenheim Palace Triathlon 2021 are now available to buy online.

Use discount code TRI21 for 25% off.