Run 100KM Raise £100

Run 100KM Raise £100

Lace up, Raise £100, Defeat dementia.

Run or walk 100km before 31 August and power life-changing dementia research.
Join Running Down Dementia today.

Do it to defeat dementia

Do it to defeat dementia

This is your moment. Raise £100 and power the fightback against dementia.

Do it to challenge yourself

Do it to challenge yourself

Run or walk 100km before 31 August. Set your challenge, do it your way, smash your goals.

Do it as one

Do it as one

At parkrun, on the street or in the gym: join our community

Run 100KM raise £100

Stats so far

Number of runners

Total £ raised

Number of teams

Total KM run

See all stats

Your support powers research

Right now 850,000 people in the UK are living with dementia.

Around every one of those people are friends and family, often struggling to keep life on track themselves. But by taking part in Running Down Dementia, you're giving hope to them all by funding vital dementia research.

Our RDD Heroes

What drives our runners? What's their reason for running? Find inspiration and motivation from our RDD Heroes, and join them by sharing your own experiences.

Our RDD Heroes

Do it with your local parkrun

parkrun organises weekly 5km runs at over 500 locations around the UK. Select your local parkrun when you sign up.