Interesting. That actually answered my next question: Do you stay at a high weekly mileage even after the marathon is over? It always seemed silly to me to drop way back down after getting to such a high level.
This thread makes me want to try a marathon as well. I seem to be predisposed to IT Band issues (which goes back to a fairly severe car vs. bicycle accident years ago I believe) so I'm not sure I can make that kind of distance. Still, this thread has some good advice from people that have done it.
Anyhow, not trying to hijack the thread, so apologies there!
Depends on your goal. Did Lebron continue to put in 4 hours a day of workouts and shooting basketballs after the Finals were over? Depends on what he wanted to accomplish.
General rule of thumb for recovery after a race is 1 day for every 1 mile raced. So for a 5K, you'd need 3 days of easy/off days to recover. For a marathon, 26 days. Generally speaking the week after a marathon, you'd cross train, walk, or be off completely with no runs to give your body a break. The 2nd week, maybe a few easy runs along with cross training. Ramping back up very slowly after that. Really depends on what your body feels like. Giving yourself one week off or cross training is always wise, then you could reverse taper. (IE, follow your taper but in reverse for the weeks leading up to the marathon)
If you have another marathon planned a few months after that, sure, you'd ramp back up and stay at a high MPW. Otherwise if that was your one goal race with no other marathons in sight, why continue to train at a high level? You could, but everyone needs a break.
You could drop down to half marathon shape vs full...even with no full marathons in sight, my ideal goal was to stay in half shape year round, or be able to ramp up to race a half after a month or two. Right now I have no distance (half or full) races signed up for this year, but I'll still keep my long runs to 6-9 miles and be able to crank it up the volume/training if I decided to sign up for one in a few months.
For your ITB issues - go see a physical therapist. Most runners nowadays know the benefits of getting a work-up done to address weaknesses. ITB normally stems from other weaknesses in your lower body, like weak hips or glutes. Foam rolling also helps tremendously with breaking up scar tissue. (NOTE, foam rolling itself has not been show to reduce injuries - rather, it increases blood flow and ROM through myofascial release. The increased ROM helps keep muscles loose)
Certainly happy to give other advice if needed. (RRCA Running Coach and marathoner, albeit, casual runner w/ a 8-month old baby boy at the house)