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I've definitely improved in the last few years since I started running in my late 40s. I have an ambition to run 5km in under 25 minutes and I have got close to that on parkrun. When I get over this cold I will try it again.

Well, you don´t look like you´re near or past the 5.0 mark - me neither, I´ve been told, but the years are there, haha -. As I said, keep at it!