Basically , by doing 18 - 22 marathon per year , I rarely do long runs outside of a marathon .
I did much better in the early years when I was just training for 5 and 10K 's .
By doing 18 - 22 marathon per year , I rarely do long runs outside of a marathon .
I did much better in the early years when I was just training for 5 and 10K 's .