Marathon Training Schedule

I've looked at  a few training schedules now and some of them are very confusing. This one seems short and sweet. Here is the link to the Active.com page. And here is the actual schedule. I need to iron out a good cross-train routine. I tend to just run 6 days a week instead.

Week 1: run 3, 4, 9
Week 2: run 3, 6, 10
Week 3: run 3, 6, 12
Week 4: run 3, 6, 14
Week 5: run 4, 8, 16
Week 6: run 4, 8, 18
Week 7: run 4, 8, 8
Week 8: run 3, 10, 16
Week 9: run 3, 10, 18
Week 10: run 4, 10, 20
Week 11: run 3, 8, 10
Week 12: run 3, 6, race (6 on Wed, no cross-train)