Running Hot

So the severe weather warning that had predicted thunder, lightning, rain and hail for today ended up as a day of blazing hot (22 degree Celsius) sun instead. It made for a very hot race but good fun all the same. I did make sure I was well hydrated and ran slower when I felt the need.

I am not sure I can get my head round how endurance marathoners manage to run in temps almost twice that temperature though....

What's the hottest temperature you have ever run in, and what coping techniques did you use?