Knee Knacker runner Sean Lavin has done been doing some research related to weather on Race Day over the past dozen or so years. Here is the first chart he has produced showing the maximum temperatures (Celsius) on Race Day:
The reader is left to draw their own conclusions based on this chart, e.g. is global warming for real?
It may also be useful to compare the temperatures on the chart above to the median finishing times in this chart. Expect further analysis from Sean (or Enzo).