Auburn Street Scramble. I was on pace to clear in 2:40-2:45, but got a flat around the 2:30 mark with 6 checkpoints and about 2.5 miles to go. Didn't have a spare tube on me, so by a quick time/distance estimation I determined it would be more expeditious to jog the last bit rather than patch the tube, and that I would still finish under time.
Recent discovery/new fave book: