Thousands of supporters, fans, volunteers and loved ones will be watching runners as they race through Chicago for the 2025 Bank of America Chicago Marathon, but getting there and how you watch will depend on where you are.

Whether you're cheering in person or from home, there's plenty you should know ahead of race day.

Here's what to expect:

When is the 2025 Chicago Marathon?

The Chicago Marathon returns on Oct. 12, "for the 47th running of one of the world’s most iconic road races."

Meanwhile, the three-day Abbott Health & Fitness Expo, hosted at McCormick Place, will take place from 11 a.m. to 6 p.m. on Oct. 9 and from 9 a.m. to 6 p.m. on Oct. 10-11.

On Oct. 11, Grant Park will host the Abbott Chicago 5k to kick off the day before the marathon.

Chicago Marathon schedule of events

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