Here are my splits with total time and average pace as the race progressed in five-mile increments in parentheses.
Mile One 11:19 (uh, 3-minute equipment stop) Two 8:11 Three 8:23 Four 8:28 Five 8:52 (45:14-9:03 pace)
Mile Six 7:54 Seven 8:49 Eight 8:38 Nine 8:58 Ten 8:54 (1:28:30-8:51 pace)
Mile Eleven 8:49 Twelve 9:31 (walking water break) Thirteen 8:41 Fourteen 8:46 Fifteen 8:57 (2:13:16-8:53 pace)
Mile Sixteen 9:00 Seventeen 8:56 Eighteen 9:32 (walking water break) Nineteen 9:20 Twenty 9:03 (2:59:10-8:57.5 final pace).
Result. I got my twenty in. I PRed. I broke 3 hours. I took second in my age group. It was a good run.
Race notes. The last mile is uphill on a country highway. I knew it was coming and I started thinking about it as early as MP 15. I was able to handle it by running steadily up it. My worst mile was nineteen when I was getting really tired. But I revived the last mile by being motivated to break three hours. The local running club has quite a resource in this trail and they stage wonderful races on it.