On a positive note, my pace was almost 15 seconds faster than last week (8:57 vs. 9:09) despite it being a MUCH tougher course, so I guess that's something. (Last week was Flatlander.) I know it wasn't totally the heat - I haven't been doing my hill work.
Oh, and I guess it's time to retire these shorts. It looks like my ass has been attacked by a wildcat.