Yay I did it! On my second attempt, I got the 10K PB I knew I could run. After a very off-putting week including 2 rubbish runs, a sniffy nose and cold symptoms, a planned run swapped for a nap and worst of all the ominous re-emergence of heel pain (NO!!), I finally got my sh*t together this morning.
Despite the above concerns and pouring rain throughout the race (skies brightening as soon as the last runners had completed the course), I smashed my PB by about 3 minutes, and my highest expectations by 1 minute to finish with a Garmin time of 51m15s!!
The official result has not been posted yet, but there was no chip timing, so I'm just hoping it's similar to what I've got on the Garmin.
I'll post a proper race report in a few days, with some more interesting photos and the official time. Meanwhile, my legs ache!