Marathon Training - More than Just about Running

Yesterday, I introduced a beginner's marathon training program I found in Women's Running magazine.  I like this particular program because it incorporates cross training with running. I think I'll see real improvement not only in my appearnce, but also in my performance. 

Today (Tuesday, 11/9/10) was a cross-training day.  I rode my  recumbent bike and did some core exercises:

Bike - 4.5 mi 35:00 (7.7 mph avg), resistance - level 5

Core exercises:
Scissor lift (10X2)
Plank (10 sec X 10)
Bicycle (20 X 2)
Clamshells (10 X 2)