Royal Windsor Triathlon 2021


Royal Windsor Triathlon 2021

Join us

Awarded the BTF’s ‘Event of the Year’ a remarkable seven times, the Royal Windsor Triathlon offers a stunning course in the historic location of Windsor.

What distances are there?

Sprint & sprint team relay - 750m swim, 20km cycle and 5km run
Olympic & olympic team relay - 1.5km swim, 40km cycle and 10km run

Please note the event includes an open road cycling route.

How old do I have to be?

Sprint distance – minimum age 15 at 31 December 2020
Olympic distance – minimum age 17 at 31 December 2020

How to enter

There are two ways to join Team Macmillan for the Royal Windsor Triathlon 2021:

Macmillan Charity Place Entry

Our charity places are a great way to make a difference to people living with cancer. We ask that you pledge to raise a minimum of £400 in sponsorship (excluding Gift Aid) and there’s a £1 registration fee.

To enter, simply visit the Royal Windsor Triathlon website, choose your distance and select the 'Enter with Macmillan for £1' option.

The registration fee is payable to Macmillan Cancer Support Trading Limited which is wholly owned subsidiary of Macmillan Cancer Support. Macmillan Cancer Support Trading Limited donates 100% of its profits to Macmillan Cancer Support each year.

Own place entry

Sign up for your own place on the Royal Windsor Triathlon website and choose to join Team Macmillan. There's no minimum fundraising pledge, just raise as much as you can.

If you already have a place in the Windsor Triathlon then you can order your free kit by emailing us. You’ll get all the same incredible support and you’re doing something wonderful with your personal challenge.

What do I get as part of Team Macmillan?

Whichever way you choose to join Team Macmillan, we’ll support you every step of the way with:

  • Our bumper fundraising pack, with and loads of fundraising tips and ideas.
  • Access to our online training zone .
  • Your free Team Macmillan technical running vest or t-shirt, plus iron on letters to customise your kit.
  • Regular e-newsletters to keep you up to date with Macmillan's news and activities.

And of course...the loudest and most supportive cheerers on the course!

Most importantly we will provide you with a reason to put in those months of training and fundraising, because you know that your efforts will help everyone with cancer live life as fully as they can.

Please make sure you read the event Terms and Conditions before signing up. You must be 15 years of age or over for the sprint distance and 17 years of age or over for the olympic distance on the 31 December 202020 in order to take part.

If you have any questions about the event please phone 0300 1000 200 or email

Every time I came running round the corner on the last leg, you guys kept me going.

Steve, Team Macmillan

More in this section

Organise your own event

Get your plans rolling. We've got advice, support, materials and fundraisers who'd love to help you create a great event.

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Go your own way

If you would like to take on a challenge for Macmillan which isn't in our listed events, no problem! Tell us which one you're doing and we'll send you a fundraising pack.

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Help with fundraising

From fundraising resources and ideas to online fundraising tips and information about paying in your donations. We'll help you raise as much as possible for Macmillan.

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Training Zone

Find training, nutrition and kit advice for whichever type of event you are doing.