Still too Sore

9.57 Miles - 1:17:46 - 8:07 Pace

Why am I still so sore.  My quads were done a bout 7 miles into this run.  I either get a good long Tempo run, or a good short one in a week, never both.  I think I am going to try my next long Tempo run on Tuesday instead of Saturday, see how I do with that.