I went back to 9 : 17 for mile 13 .
I even did an 8 : 45 pace for the last . 21 miles ( even on the stupid blanket on the field ) , but I knew I did n't make it .
I went back to 9 : 17 for mile 13 , and I even did an 8 : 45 pace for the last . 21 miles ( even on the stupid blanket on the field ) , but I knew I did n't make it .