In reply to DancingOnRock:
> I suspect you are already well fat-adapted. Possibly naturally or possibly through training years ago that you didn't realise you were doing.
Quite probably - it's easy to forget these things and get into your own little world of how to train. I suppose that's how an why coaches make their money!
> You only need carbs as you approach race speed. All the race speed runs are short ones, you should have enough carbs for those short runs just through good diet.
Agreed.
> We're only talking about the long training run. That's where you are adapting to run aerobically and by reducing the amount of carbs available, forcing your body to learn to use fat as fuel.
Fair point - although personally, I like to throw a few fast (half marathon - 10k pace) km's on the end of my long run, probably not something to be doing when your long run is the furthest you can go without your legs falling off.
> I'm not talking about a low carb diet here. Just fuelling specifically for a long run. In this case the OP is only up to 10miles. Looking like a 4+hr marathon.
I know you weren't - I only bought them up as they're the current trend and as such those new to training can be easily drawn in. Not to say that the OP is new to training, those looking to make a change can fall foul. I have no idea how people manage with mininimal carbs, it must be a grim existance (he says whilst munching down on a hot cross bun).
Post edited at 14:19