hypnotoad wrote:
Mandingo wrote:I did the Boston 2004, that was rough. the heat added about an hour!
What??? Absurd. The heat in Boston 2004 added maybe 10-15 secs per mile. It was also 20% humidity and a strong tailwind. It was tough for sure, but come on, an hour?!?!
The winning time at Boston in '04 was, what, 2:14?... for guys whose job is the marathon. That was a bare minimum 15 seconds slower per mile for the winner - everyone else fell off a cliff from there. I ended up 70th or so in the men's division with a time that normally wouldn't have gotten me within 10 minutes of the top 100. In fact, my time was a good 15 minutes slower than what you'd historically have needed to run to finish about where I did in the overall placings. And 10 to 15 minutes is about how much slower I felt my time was than the shape I thought I was in. And I had a good day. As for that tailwind, it never materialized until much later in the day - so it might have aided the 4 hour crowd, but not anyone under 3 hours. I recall at about mile 5 going by some Red Cross tent from which a volunteer yelled out, "90 degrees!" The wind was in my face at that point. I stopped looking at my watch and started taking water from whoever was offering, every 100 feet or so, just dumping it on my head.
Chicago wont be that hot, given the 8 am start, but even 70 degrees at the gun will take its toll. Unless you trained in some place like Phoenix, you will suffer if you go out at goal pace. And if your sole purpose in running Chicago is busting a certain time, like a sub 2:22, or a sub 2:30 - as opposed to just running a marathon, whether it takes you 4,5 or 6 hours - then it isn't going to happen. Either resign yourself to junking months of training, or go somewhere else.