not going to be his day - or anyone's for that matter. the weather is gonna kick everyone's teeth out. it will be slog for a lot of sub 2:45 people and a death march for the 4-5 hour completer crowd. you might see a repeat of the race being cancelled by noon for the 4-5 hr people tomorrow.
i ran (completed) a trail marathon today - same weather conditions - it was 83F at the finish line. we had shade for alot of the course - but the last 2 miles on an asphalt bike trail were like an EZ bake oven. the chicago course (asphalt, concrete, cement )will be radiating heat by mid morning - today's weather did not help either. pain train.