I tend to keep to pretty much the same exercise schedule, with a few substitutions as necessary. Here’s an example of a typical week for me:

Marathon Training Schedule (May 2012 – October 2012)

Monday: Run (short)

Tuesday: Lower body strength training (details here) + Moderate Intensity Cardio (~20 minutes)

Wednesday:Upper body strength training (details here) + Moderate Intensity Cardio (~20 minutes). 1 hour of yoga.

Thursday:Run (medium)

Friday:Rest or light cardio (a walk, for example)

Saturday: Run (long & slow).

Sunday: Swim or light cardio

Workouts

Wednesday, May 30:  30 minutes upper body strength training; 30 minutes stepmill; 1 hour yoga.