The weight of the pack didn't feel too bad except for when I walked when I just wanted to get the damn thing off my back. But when I was running it felt fine which I would have expected to be the other way around.
If the last few runs in this heat are anything to go by, and the long range weather forecast is right being 29 degrees it'll be a killer next week and every single person who has entered will deserve their well earned patch.
Today I went through about a litre and a half of water in the 7.8 miles and I only climbed 815 feet! I'll definitely need the full 3 litres next week.