In reply to Dark-Cloud:
> No races do as far as i am aware. It's a precaution.
Yeah, I haven't heard of one that specified in any way what you had to wear, only what you had to carry (other than a few that state when head torches must be used - which does put me off a race as I prefer a hand torch when running and have very good night vision so may not even want anything on if I'm not on a road where it has a different purpose of being seen rather than just seeing).
> Its fine wearing shorts if you are moving, but turn an ankle and reduce to a hobble and your body is going to be dumping heat pretty quickly if its wet and windy.
Yes, this is very true. When I had to drop out of Lakes in a Day in 2017, I was wearing everything I was carrying (which was a lot more kit than most) and was still cold.
Post edited at 21:02