When I started this running thing in January, I plucked a target out of the blue, to be able to run 5k in less than 40 minutes by August. I reckoned 8 months was what I needed to get my pace up from its laughable starting point - as well as getting the ability to do the distance more or less without stopping. By graduation, I was doing 3.5k in 30 minutes, so I needed a bit more pace as well as distance.
Week by week I have chipped away at it. Some runs better than others, but the trajectory generally moving in the right direction. At today's Parkrun I started from the back (as ever) and it took me 8 seconds to get to the start line. Parkrun official time 40 mins 5 seconds, my own timing including that start and a bit of running afterwards giving an average pace of 7 mins 57 seconds per k. So I have decided that counts as me achieving the milestone.
Next milestone is to be able to run for an hour by my runniversary.