Results are in and are worse than expected. Unfortunately, I had my the correct time, at 33 minutes, 43 seconds. In September my average speed came in at 22mph and one month later I only managed 18.6mph. Ouch. Last year, my time was faster than whole bunches of people. This year, I'm toward the bottom.
Clearly, my heart-rate was too high and my cadence too low. In my practice rounds, average cadence was in the 82-84 range but in the race I only managed 78. Ah well, that gives me something to work on this winter/spring.