Start your summer strong at one of the UK’s most iconic multisport events the Royal Windsor Triathlon returns on Sunday 14th June 2026! With Sprint, Standard, Relay and 10k options available, this award-winning race is perfect for triathletes of all abilities.

The day begins with an open water swim in the River Thames keep an eye out for swans! Next, take on a thrilling road cycle through the historic town of Windsor, passing Windsor Castle and heading into the scenic countryside. You’ll finish with a memorable run into Windsor Great Park, along the iconic Long Walk, with the castle framing your final strides.

Whether you’re going solo or teaming up for the relay, the Royal Windsor Triathlon is a must do event with a royal backdrop and a buzzing race village atmosphere.

Before securing your place on any event, please see our fundraising terms & conditions.