I've really been struggling to get below 27 minutes for my 5km lately. Either it's after a long run, or a hill day, have the stroller with me, etc etc.... list of excuses!
Today, I had limited time to run, (errands in the afternoon, and my mom was leaving after lunch...) SO I just thought, today is the day! Short run, going for some speed.
I knew I had a good pace going, because glancing at my Garmin, I did have a pace of 4:30-4:50p/km going at points, and my half way turn around, I was at 12 minutes.