Marathon Training Day 1 Week 8

I set a new 4 mile PR 2 seconds faster than when I was in peak training on 11-1-11 5 days before my last Half Marathon. I have another Half Marathon coming up in 5 days. That makes me more confident I am ready. I have increased my distance (endurance) by 50% since then with a slight increase in speed. On Sunday October 30th I ran 10 miles at the Greenbelt Trail at a 9:23 avg pace followed by a 4 mile run 2 days later in 34:21. This past Sunday I ran 15 miles at the Greenbelt Trail at 9:31 avg pace followed by a 4 mile run 2 days later in 34:19.