Join #TeamHDA for the Windsor 50.


Event information

Get active after the Easter holidays and take on a historic 50 km Ultra, a testing 25 km, or a sharp 10 km challenge at your pace as a walk, jog, or run.

From a Windsor Racecourse basecamp 2000 adventurers will head out on looped routes through the Great Park with fantastic views of the Castle, on to Runnymede, along the Thames Path, and taking in some wonderful surrounding countryside.

Join as an individual or as a team; you’ll get full support from the Action Challenge team all the way, plenty of food and drink, a special medal, T shirt and celebration finish back at basecamp.

Walk, jog, run for charity


Event details

  • Event date: Saturday 18 April 2026
  • Distance: 10km, 25km, 50km
  • Payment options: Full charity sponsorship, mixed fundraising, own place fundraising

Why the Huntington’s Disease Association?

Fundraising for the Huntington’s Disease Association and being part of #TeamHDA is rewarding and makes a huge difference to those living with Huntington’s disease – we need your support to keep delivering the life-changing service we offer.

Register here


If you take part you will receive

  • A free sports vest or t-shirt to wear on the day (once you have raised £100)
  • A welcome email and fundraising toolkit from our friendly fundraising team
  • Support from our dedicated fundraising team to help you reach your target


Looking for a different race in your area?

We have charity places for hundreds of races in the UK. Take a look at our event directory to view races from 5k runs to marathons and from obstacle races to virtual challenges, there is something for all abilities, all year round.

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