Beginner triathlons

The World’s biggest triathlon welcomes over 13,000 triathletes to swim, bike and run around London's landmarks.

Join the finale of the Castle Tri Series at Hever Castle and take part in the Starter Tri - a distance perfectly suitable for first-timers.

The World’s biggest triathlon welcomes over 13,000 triathletes to swim, bike and run around London's landmarks.

It’s big. It’s bold. It’s gutsy. It’s the UK’s one and only disability sports series for the Everyday Superhero!

Join the finale of the Castle Tri Series at Hever Castle and take part in the Super Sprint - a distance ideal for beginners.

Come and take on the Starter Tri in the beautiful grounds of Yorkshire's Castle Howard. This is the perfect distance for first-timers.

The Sprint Plus race is the longest beginner distance at the Cholmondeley Castle Tri - a good step up from the Sprint.

Join the finale of the Castle Tri Series at Hever Castle and take part in the Sprint Plus - a step-up from the regular Sprint distance.

The Super Sprint is the second shortest distance at the Cholmondeley Castle Triathlon - perfect for beginner triathletes.

Come and take on the Super Sprint Triathlon in the beautiful grounds of Yorkshire's Castle Howard - perfect for beginners.

The Starter Sprint is the shortest and most achievable distance at the Cholmondeley Castle Triathlon - perfect for anyone starting out.

Join the finale of the Castle Tri Series at Hever Castle and take part in the Sprint triathlon - a classic distance at a beautiful venue.

The Sprint race is a popular distance at the Cholmondeley Castle Triathlon - a comfortable distance for beginners.

Come and take on the Sprint Plus Triathlon in the beautiful grounds of Castle Howard - an ideal step-up from the regular Sprint.

Chantilly cream, one of Europe’s finest art collections and a Bond villain’s hideout - what a fantastic location for a triathlon!

Come and take on the Sprint Triathlon in the beautiful grounds of Yorkshire's Castle Howard. This is the perfect distance for beginners.

Chantilly cream, one of Europe’s finest art collections and a Bond villain’s hideout - what a fantastic location for a triathlon!

Chantilly cream, one of Europe’s finest art collections and a Bond villain’s hideout - what a fantastic location for a triathlon!

Chantilly cream, one of Europe’s finest art collections and a Bond villain’s hideout - what a fantastic location for a triathlon!

Have you got what it takes to be an urban legend? Run, cycle then climb to the top of Guy's Hospital Tower and take in stunning views of London's city skyline. Choose from a classic urban triathlon, an ultra triathlon, the stair climb only, a relay or a kid's triathlon. With each challenge, you will be raising funds for Guy's, St Thomas' or Evelina London. Why not take on this unique, city triathlon with friends, family or colleagues? This can be done as a team or as part of a relay. At the finish line, you'll receive an exclusive medal, t-shirt and goody bag as well as enjoy our post-race party with free food and drink on the 29th floor and our all-day festival down at the start line that will have refreshments and entertainment.