I've raised £900 to raise money as a gesture to my Granddad for his 90th in May for which he will donate to his chosen charity - probably where he volunteers!

My granddad volunteers locally in Portsmouth. He is 90 this month (May) and misses the interaction, his colleagues and the support he receives.
Therefore I'm taking on a small challenge for his birthday by completing 90 miles (running) for his 90th birthday, during the month of May. This is a challenge for me, having started running again fairly recently, I haven't completed this many miles in such a short space of time!
This is a small gesture that as we can't be there on his birthday to celebrate with him. I would like to try to raise some money (however small) as a birthday gift, for him to donate to his chosen charity - probably the one he volunteers with!