In spite of the summer heat here, today was the first time I have gotten under 32 minutes for the 5K parkrun. I have been 3 to 4 minutes off that time for the past couple of months - but I did push it today. I am thinking now that perhaps below 30 minutes is "possible" sometime in the future - but definitely only when winter returns. I will have an easy week this week and will run in the San Francisco parkrun next weekend - the morning temps there are currently only around 12C - so you never know , maybe I might make my sub-30 minute 5K debut before an International audience???