Thanks everyone for the advise!

Hi John I have a small question. I'm in week 13 of a 16 week marathon training schedule ending on October 19th with the Scotia Bank Toronto marathon. This is my 4th marathon but I tend to run between 4.5 and 5.5 hours-which is fine with me. I've hit all my milestones in my programme-20.23.25.27.30 k...