Windsor Ultra 2027
17th April, 2027
Shake off the Easter break and take on an unforgettable challenge in 2027! Choose from a historic 50km Ultra, a demanding 25km, or a fast-paced 10km route, all at your pace as a walk, jog, or run.
Use code: CWCDEAL10 to get £10 registration, excluding 10km and 10 mile challenges.
About the Windsor Ultra 2027
Starting from the vibrant Windsor Racecourse Basecamp, you’ll join 2,000 adventurers on scenic routes through Windsor Great Park, with stunning views of Windsor Castle, before heading to Runnymede, following stretches of the Thames Path, and exploring beautiful surrounding countryside.
Whether you’re taking part solo or as a team, you’ll enjoy full support throughout, regular food and drink stops, and a fantastic finish-line atmosphere. Earn your medal, finisher’s T-shirt, and, most importantly, a huge sense of achievement.

How to Join
Sign up online below. Confirm the distance you’ll take on; choose a funding option which suits you – and pay the appropriate Registration Fee.
You’ll get a Confirmation Email, which includes a link for you to set up your online JustGiving sponsorship page.
If you have any questions, please email [email protected]
Fundraising Options
Option 1
CHARITY
FUNDRAISNG
Pay a small Registration Fee & Fundraise for your Charity (who then pay for your place)
50 KM
£10 Reg Fee & at least
£375 fundraising/sponsorship
25 KM
£10 Reg Fee & at least
£275 fundraising/sponsorship
10 KM
£10 Reg Fee & at least
£150 fundraising/sponsorship
Option 2
SELF FUND
WITH FUNDRAISING
Pay for your place & fundraise whatever you can (no event place cost for the charity)
50 KM
£139 Fee paid online &
fundraise whatever you can
25 KM
£89 Fee paid online &
fundraise whatever you can
10 KM
£55 Fee paid online &
fundraise whatever you can
Where your money goes
Every contribution is carefully allocated to fund critical research, provide essential resources to families, and drive greater awareness.
HOW WE USE
EVERY
£1
| Fighting childhood cancer | |
|---|---|
| Research | 44p |
| Supporting Families | 15p |
| Raising Awareness | 21p |
| Funds to support our cause | |
|---|---|
| Fundraising | 20p |
Cancer diagnoses
Every day, around 10 children and young people in the UK are diagnosed with cancer.
New treatments
8 out of 10 young cancer patients can now receive successful treatment, thanks to the specialist research we help fund.
Safer therapies
We are committed to developing safer and more effective childhood cancer treatments with fewer toxic side effects.
Funding research
We invest in crucial childhood cancer research that would otherwise go unfunded.
Help to fund lifesaving research
Every step helps fund research into childhood cancers, creating better treatments and brighter futures.
Support for families
in crisis
Your run provides emotional and practical support support for families families facing the challenges of a cancer diagnosis.
Become a champion
for change
You’ll raise awareness and vital funds, helping to ensure no child faces cancer without hope for a brighter future.
Read more about the Ultra Challenge Series, and see if there’s another event that takes your fancy.