I set out at 5:20 a.m. Within ten minutes Texas humidity had bestowed upon me a sheet of sweat that would not evaporate for the duration of the race.
As I completed the first couple of miles around Hemisfair Plaza, I re-evaluated my hopes for breaking six hours as I did in Chicago a month ago. Chicago's temps started at 39 and peaked inthe 50's; here I started at about 55 with sunrise still well over an hour away. Not grounds for optimism.