90F -> 80F (10pm - 7am). Tough, tough race! Hot, no breeze, and the climbs were steep - even included 30-40 tall stairs per lap. Lots of hiking/walking. By the end I was barely making it up. I ended up doing 17 laps (~2.7 miles per lap). But I had the option to do another since the clock hadn't hit 9 hours yet - was leading the race and I just thought there was no way I could physically make it around again. So I lost because the guy a few minutes behind me did go out for #18. Felt really dumb/wimpy after that one.