Join the fight by donating the average parkrun time to Alzheimer's Research UK.
As well as modelling the parkrun t-shirt so winningly, Freya is also the hero of Alzheimer's Research UK's animation Santa Forgot, narrated by Stephen Fry.
Like us, Freya believes in the power of research to defeat dementia. If you're inspired by her story this Christmas, get out and Donate Your Time with parkrun this weekend!
If you would like to Donate Your Time in others ways, parkrun and Alzheimer's Research UK both rely upon the goodwill of volunteers to help in a variety of different roles.
From setting-up events to taking part in dementia research projects you can find out more information below.