Out of the 30 or so person field this year, there were only 3 "competitive runners" including myself - everyone else either ran sporadically or walked. The other two were both men in their mid 20's and both looked to be in good shape.
I went to the race expecting not to need to run hard, based on last year's experience, but had a race on my hands. One of the guys was doing what looked like wind sprints in the parking lot and my wife said "Uh-oh, you're going to have to run". She was right.
The cool thing about racing against someone is that there was strategy involved, at least on my part. I wasn't having a great day, but I hung around, hung around, hung around and then made a move. It wasn't enough to win, but I felt like I had the upper hand mentally and gave myself the best chance to win.