Chicago Marathon Race Forecast

Chicago, IL • October 12, 2025

What's that blue line painted in Chicago? It means something important for Chicago Marathon runners

/Chicago residents may notice blue lines popping up on the city streets as they make their way around town.

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October 03, 2024

What's that blue line painted in Chicago? It means something important for Chicago Marathon runnersChicago residents may notice blue lines popping up on the city streets as they make their way around town. https://www.nbcchicago.com/news/sports/chicago-marathon/what-the-blue-line-painted-on-city-streets-means-for-the-upcoming-chicago-marathon/3551548/

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