I am running the edinburgh marathon which is only just week and a half away. I had been thinking for a while that my old trainers which I've done all my training in were starting to need replaced. However, always read never run marathon in new trainers - so decided to hold out and get new ones after the race. However, on my last 2 runs I have had pain in the 3 middle toes on my left foot - like pressure underneath. When I look at the sole of the shoe this area is very worn - no tread left. So now I am in a dilemma, do I stick with them for the race - better the devil you know. Or should I buy a new pair - but won't really have enough time to break them in and only 20-25 miles planned left to run before the day.
Opinions, help and advice appreciated