(I think those week numbers are right.) The most consistently difficult thing about marathon training, that I've found, is the time that it takes. Even having dropped back to only running four days a week, I'm logging somewhere on the order of 7-8 hours weekly. That's not even taking into account warming up, cooling off, the extra time it takes to get out of bed the day after running 18 miles, meal planning, meal prepping, and the list goes on. Any kind of exercise is a com