I train in the NB 150s, which are practically flat. I can do 20 mile runs in them comfortably by running with a decent style.
However when I wear them in a race, when I get tired I find my form goes and I end up heel striking too much which is a big risk in a marathon.
I wore them today when I ran a HM at marathon pace and I noticed by 10 miles it was harder to maintain form.
So I would like to try a very lightweight trainer that has slightly more in the heel than the 150s, but not as much as the Nike Ekidens, which I've run my last 3 marathons in, but which I find have a little too much in the heel which encourage even more heel striking.
Any suggestions for a shoe weighing less than 200g for size 10 with a very slight heel?