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John Rodson
RE: OFFICIAL Chicago Marathon Weather Thread

John Rodson wrote:


Raider3817 wrote:


Napper wrote:


John Rodson wrote:


itdepends wrote:


douglas burke wrote:


Bananarooney wrote:

UPDATE: 37°F, rain, and NNW winds @20 mph, gusts to 40!


Is that a HeadWind or would they be running with the wind at their back?


Both, as the course travels in each direction. I am not an expert on the course, but I think this would mean slightly more tailwind than headwind, and mostly in the middle miles. But it could mean some tough running into a stiff wind in the final miles.


Last year there was some wind from the N or ENE. The wind wasn't up that much at the start of the race, and the portion of the course heading up seems less exposed, so it wasn't really an issue. And it's easier to tuck in behind people in the earlier stages. I think we did have the tailwind for a good portion coming back down. When we finally turned back N again at around mile 23, there was a noticeable headwind all the way up to the finish.

With NNW, there's perhaps a greater chance the buildings block some of it. Anyone who lives in Chicago know?

But it's still almost a full week out. Time for everything to change.


I live in the area. It's only Monday, so I think this could change by the weekend. I think they're pretty good at predicting the temperature range this far out, but not so much on precipitation or wind. I'm also racing it, and I'm telling myself that it's good that we're getting this windy forecast on Monday and not on Friday. I hope the predicted wind speeds come down by the weekend. This morning was absolutely perfect -- the leaves at the tops of the trees were hardly moving.

If it is windy, the buildings don't really help much in my opinion. Find a good group to run with and tuck in.


I feel like the buildings will only amplify the winds impact. Which could be both good and bad.


Not trying to be a jerk, but you do know that, by the laws of physics, this is not actually possible, right?


*Yes, I know the wind tunnel effect. It requires buildings >20 stories. This doesn't apply to 99% of the course.

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