I'm desperate for some advice on shoes. I am doing my first ever marathon in just two weeks time and my shoes (triumph 8's) are suddenly causing me problems. I have two pairs one older pair that I use for shorter training runs and a pair that have done a lot less miles that I've been using more recently for longer runs that I was meaning to wear for the marathon. Up until the last few weeks I have found them very comfortable however I think as I've been building up the training my running style has started to change a bit from a very heavy heel striker to a bit more of a mid foot striker. Anyway whatever the cause I seem to be suffering from sore ankles quite a bit and I even feel that the top of the shoe is pushing into my foot and lower ankle as if it is sitting to high in my foot and it's causing quite a lot of discomfort. It also feels as if the top of the shoe is really stiff. I have tried lacing it lower down but then my heels start to lift out. I'be been looking at more minimal shoes (in particular brooks pure cadence and green silence) but I'm pretty sure it would be a bad idea to try to change shoe types so radically with only two weeks to go before the marathon when I've been running in such a cushioned shoe. But I'm really panicking about not making it in the shoes I've got! Does anyone have any advice please?