2027 Bank of America Chicago Marathon ACS Team DetermiNation Reservation System is a running race on October 10, 2027 in Chicago, IL, with an entry fee of $25.
Claim your guaranteed entry starting Thursday, October 8, 2026 with Team DetermiNation for the 2027 Bank of America Chicago Marathon at the fundraising minimum of your choice. Once you reserve your spot with Team DetermiNation, your ACS staff partner will reach out after October 12 within one business day to provide instructions on how to formally register for the marathon itself and how to create your fundraising page through GivenGain. Thank you for your patience as we anticipate a high volume of interest.
Charity Entry: Claim your guaranteed entry through ACS and agree to raise $2620 ($100/mile) by September 29, 2027. You are responsible for paying the marathon entry fee ($325 + processing fee). *Once our team is sold out, we will begin a wait list and the fundraising minimum will INCREASE from $2620 to $3000.
FREE Charity Entry: Claim your FREE guaranteed entry through ACS and agree to raise $5000 by September 29, 2027. ACS will pay the marathon entry fee on your behalf.
NOTE: If you join our team while the public drawing is open, you are agreeing to BYPASS the drawing and claim your guaranteed entry immediately through the American Cancer Society's Team DetermiNation. You may NOT enter the drawing AND reserve a spot on Team DetermiNation - it is one or the other. We anticipate our team will sell out on or before the day public drawing results are announced in December, so please keep this timeframe in mind. Once our team is sold out, we will start a wait list and the fundraising minimum will increase.
All participants must reach their fundraising minimum by Wednesday, September 29, 2027. If you have not reached your minimum by Wednesday, September 29, your credit card will be charged whatever is owed to reach your minimum on Thursday, September 30, 2027. You may continue to fundraise after the minimum deadline and through the entire month of October. If you are charged on September 30 and then receive additional donations, you may request a refund from your ACS staff partner on Friday, October 29, 2027.
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
63°
Typical Low
50°
Based on US Climate Normals data from Chicago Northerly Is, 2 mi from the venue.
Population
2,707,648
as of 2023
City Elevation
594 ft
Nearest Airport
MDW
Chicago Midway International Airport · 6 mi
Time Zone
Central Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Every finish line starts with a single decision. Claim your spot at 2027 Bank of America Chicago Marathon ACS Team DetermiNation Reservation System, put it on the calendar, and turn “someday” into a start date.
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2027 Bank of America Chicago Marathon ACS Team DetermiNation Reservation System
Oct 10, 2027