The one week of sunshine we get all year...
Have you got a replacement pair yet WiB?
I think the best way of coping with running in the heat, is to get out there and do it, and you will very quickly acclimatise (or acclimate as our US friends say.)
I don't think it really matters if you understand it, mate. If someone said so then I think the wise thing to do is follow it.
I was really just commenting on the 'do as the experts do' bit, and I don't think they would walk in a 50k. But obviously you should just do whatever you think is going to produce your best performance.
50k is very different to a 110 though. Nothing wrong with run-walking it, but I'd have thought you should pretty much approach it the same way you would a marathon.
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