When someone says "10K" to me I think of this.
Turns out this is wrong. At least this time. We were in Bristol for the 10K run, which number one son was taking part in. We were there to provide ground support, hold his coat, etc etc.
It was great. I've never been to one before and the atmosphere was amazing. There were quite a few runners who looked around the same age as me, maybe even older. And an eighty year old chap who went round the course too. Perhaps I should have a go at this running thing.