Not a good race

This morning I ran the Baltimore half-marathon, and it did not go very well at all. I basically hit the wall at mile 3 and shuffled my way through the final 10 miles, even needing to take walk breaks toward the end. I was just dead tired, and I don't really have an explanation why. I struggled just to stay below 10-minute miles. One of my miles was even over 10 minutes. Well, I'm trying not to dwell on it too much. Here are my splits:

To the starting line - 1:23
1 - 8:17
2 - 8:08
3 - 7:53
4 - 7:58
5 - 8:13
6 - 8:45
7 - 8:44
8 - 9:18
9 - 9:28
10 - 9:26
11 - 9:54
12 - 10:47
13 - 9:21
13.1 - 0:43
Gun time - 1:58:25