The Bank of America Chicago Marathon on October 11, 2026 is one of the best first marathons in the world. Here is everything you need to know.
The Bank of America Chicago Marathon on October 11, 2026 draws over 45,000 runners through a flat, fast course that tours the best neighborhoods of Chicago. It is widely considered one of the best marathons for first-timers and PR chasers alike.
The course is flat — only about 240 feet of total elevation change across the entire marathon. The crowd support is massive, with an estimated 1.7 million spectators lining the course. And the organization is excellent — Chicago runs like a well-oiled machine.
The lottery is easier to get into than New York or London, and there is no qualifying time required. If you want to run a World Marathon Major, Chicago is one of the most accessible options.
The course is a large loop that starts and finishes in Grant Park, along the Lake Michigan lakefront. You run through 29 neighborhoods, each with its own energy and crowd vibe.
Miles 1-5 (Loop and North Side): Starting in Grant Park, you head north through the Loop and into Lincoln Park. The first few miles are crowded — be patient and avoid weaving. The energy from the spectators in Old Town and Lincoln Park is outstanding.
Miles 5-13 (Lakeview, Boystown, Wrigleyville): Running through some of Chicago's most vibrant neighborhoods. Boystown around mile 8 is one of the loudest sections on the course. You will hear music from every bar and restaurant.
Miles 13-18 (Little Italy, Pilsen, Chinatown): The course turns south and runs through some of Chicago's most diverse neighborhoods. Pilsen has incredible crowd energy with live mariachi bands. Chinatown around mile 21 is colorful and loud.
Miles 18-22 (Bronzeville, South Side): The crowd thins slightly here, and this is where the race gets mentally tough. If you have been disciplined with your pacing, you will feel strong. If you went out too fast, this is where you pay for it.
Miles 22-26.2 (Back to Grant Park): Heading north back toward the finish. The last two miles along Michigan Avenue have huge crowds. The finish in Grant Park with the Chicago skyline behind you is spectacular.
October in Chicago can be unpredictable. The most common problem is heat — several editions of the Chicago Marathon have seen temperatures in the upper 70s or even 80s, which is dangerous for marathon running. Check the forecast and have a backup pacing plan for warm conditions. In 2007, the race was stopped mid-event due to extreme heat.
Ideal conditions are 45-55 degrees with cloud cover. If the forecast is above 65, slow your goal pace by 1-2 minutes.
Expo: McCormick Place Convention Center, typically Friday and Saturday. Bib pickup required in person.
Race morning: Grant Park opens early. Corrals are organized by projected finish time. Get to your corral early — the walk from gear check to the start can take 20-30 minutes.
Gear check: Bag drop is available near the start. You will pick up your bag near the finish in Grant Park.
Spectator tips: Michigan Avenue (mile 24-25) and the finish area in Grant Park are the best spectator spots. The CTA trains run early on race morning — tell your people to take the train, not drive.
Chicago is a PR course. The flat terrain means you can run even splits from start to finish. Do not go out fast in the first mile — the downhill start into the tunnel under the buildings creates a false sense of speed.
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