Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Marathon Training Plans and Principles and other Running topics.
By late summer, it's time to be getting up to a 20-mile run, if you haven't already. If you have done a 20 earlier in the summer, get another one in during August. I like to do 2-3 runs of at least 20 miles before a marathon. Just make sure the last 20 is at least a month before race day, so you have time to taper.
If you haven't done a 20 by mid-August, fit one into your schedule, but don't jump from 13-14 to a 20-miler. Get at least one 16-18 mile run under your feet to boost your confidence.