#TeamARUKparkrun is out to make dementia a distant memory. Join us.

Challenge yourself to run 100km and raise £100 over the summer. Don’t worry, you don’t have to do it all at once! Simply track your run and help us to Run Down Dementia.

Register for free
There’s still time to get involved
£ raised0

The 100km Club

Look who’s crossing the finishing line...or just about to!

How to get going today


Sign up for free and set your distance and fundraising goals

Shout about it

Tell people what you’re doing and get them to support you


Track your kilometres in Strava and put your parkrun on the map

Personal stories

Who's leading the challenge?

      Dementia is a condition that robs over 850,000 people in the UK of their memories and other abilities, and their loved ones of the independent person they knew.


      850Kpeople affected in the UK

      +950KUK runners

      If we challenge ourselves, we have a real opportunity to make a massive difference.

      Money raised from Running Down Dementia will support Alzheimer’s Research UK’s ambitious risk reduction research. While evidence suggests a healthy lifestyle, particularly in midlife, can help reduce dementia risk, there is still too much we don’t know about how to reduce our chances of developing the condition. We are setting out to answer the big questions in dementia prevention, funding big research ideas that will empower all of us to take control of our own dementia risk.

      That’s why the parkrun community is partnering with Alzheimer’s Research UK in Running Down Dementia and why we are encouraging YOU to join our movement.

      This is your chance to be part of a team of trailblazers who defeat dementia.