I am currently averaging 40 miles a week (3 x 8 miles on Tue, Wed & Thu, and a long run at the weekend). I have just completed 3 1/2's in 1.56, 1.48, & 1.44 respectively so am improving slowly. Not in any pain at the moment although occasionally I have a sore shin for a short period after a long run(nothing serious I hope!). Again advice is appreciated.