
Book your place
Royal Windsor Triathlon June 2027
Race Entry Summary
Sprint Triathlon
£81(+ 5% booking fee)Sprint Triathlon Relay
£36(+ 5% booking fee)Sprint Triathlon with Sunday Racking
£99(+ 5% booking fee)Standard Triathlon
£99(+ 5% booking fee)Standard Triathlon Relay
£45(+ 5% booking fee)Standard Triathlon with Sunday Racking
£117(+ 5% booking fee)Macmillan Cancer Support - Sprint Triathlon Entry
£30(+ 5% booking fee)Macmillan Cancer Support - Standard Triathlon Entry
£35(+ 5% booking fee)Event Video
About This Event
Included in the entry
Join Us for the Royal Windsor Triathlon on Sunday 13th June 2027
In support of Macmillan Cancer Support
We’re delighted to have Macmillan as our RunThrough Triathlon Partner in 2027. Macmillan has spent more than 100 years helping people living with cancer. From the moment someone is diagnosed, we're there with all the information, support and guidance they need, to help everyone with cancer live life as fully as they can.
Start your summer strong at one of the UK's most iconic multisport events the Royal Windsor Triathlon returns on Sunday 13th June 2027! With Sprint, Standard and Relay 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.
First held in 1991, the Royal Windsor Triathlon is one of the UK's longest-running triathlons. Jonny Wilkinson, Tanni Grey-Thompson, Gareth Thomas and Jenson Button have all raced it, and so has Princess Beatrice.
The Royal Windsor Triathlon is operated by RunThrough as the Official Event Delivery Partner.
Ticket Selling
Super Early Bird entry - Ends Sunday 2nd August 2026
Early Bird entry - Ends Sunday 13th December 2026
Standard entry - Ends Sunday 16th May 2027
Race Distances:
Sprint Triathlon
750m swim, 20km bike and 5km run
Standard Triathlon
1500m swim, 40km bike and 10km run
Race Day Schedule
- 06:00 amSprint Triathlon
Bike: Elevation - 127m | Terrain - Road
Run: Elevation - 51m | Terrain - Road
07:00 am - Standard Triathlon
Bike: Elevation - 243m | Terrain - Road
Run: Elevation - 85m | Terrain - Road
Race day pass is not included in the above entry fee and needs to be bought at checkout
Relay races are open only to teams of 3 participants
Awarded BTF's 'Event of the Year' an incredible seven times, this legendary triathlon continues to draw thousands each year with its quality, location, and unforgettable course.
*Please note: BTF Race day pass is not included in the entry and needs to be purchased separately
Each kilometre is accurately marked with distance flags and our friendly marshals will guide and cheer you all the way to the finish. We cannot wait to welcome you to the Royal Windsor Triathlon Presented by Sigma Sports.
Event Location: Alexandra Gardens, Windsor SL4 1RF
The Route
Sprint route
Standard route
Our Partners
Event Information
Swim: 750m (Sprint) or 1500m (Standard) in the River Thames. You start swimming downstream, then turn for a challenging upstream section.
Bike: 22km (Sprint) or 40km (Standard) on open roads, out of historic Windsor past the Castle and into the surrounding countryside. All riders must follow the Highway Code. The Standard distance rides the top loop of the course twice, so study the course map for the two decision points, which are also signed on the day.
Run: 5km (Sprint, two laps) or 10km (Standard, three laps) into Windsor Great Park and along the Long Walk in front of Windsor Castle.
Minimum ages:
Sprint Distance - 15 years and above
Standard Distance - 17 years and above


Questions about entries or race day?
Transfers, deferrals, age limits and the rest live on our FAQ page, not on each event.




Add an event T-shirt
Celebrate your race for just £15
Retail value £25. Available in male and female sizes, XS to XXL.
Shop RunThrough Kit
More events you might like
Find an Event
Flat and fast 5ks to trail half marathons: find your next start line.
Browse All Events








