Formed in 2009, the Castle Triathlon Series has swiftly established itself as the UK’s largest triathlon series.
With 7,000 entrants expected at our Hever Castle event in September this year it is not just the second biggest race in the UK triathlon calendar but it also secured the title of the world’s largest children’s triathlon in 2014.
From Lough Cutra to Chantilly and Castles Howard, Cholmondeley and Hever, we’re immensely proud of the iconic backdrops to each Castle Triathlon Series race and the friendly festival atmosphere produced at every event.
The Castle Triathlon Series is brought to you by an incredibly dedicated team who work throughout the year to make the races the best they can be. As well as the full time team, there are a number of volunteers and contractors that we enjoy working with. We’re also always on the lookout for dedicated personnel, if you would like to join the team, please get in touch.