Quote Originally Posted by Theolneywayisup View Post
I may be showing my ignorance here (OK - I AM showing my ignorance here!) but technically what constitutes a base layer as far as the RO is concerned? Is it ANY long sleeved top regardless of thickness, thermal properties etc?

It's not normally an issue for me as I always tend to carry far too much in a race anyway but with the forecast as it is, assuming is stays the same, I am happy to carry a very lightweight top if I am allowed.
I'm taking a Helly Hansen. I think what with the weather forecast, some of the kit requirement will be dropped on the day. Take everything and then re-pack your bumbag once the organisers give the go ahead to take lighter kit i.e. pertex and not waterproofs.