SEPTEMBER 17, 2023 • 7 a.m. for 26, 13.1 and 20 • 7:10 a.m. for 5K • ST CHARLES IL


Deferral Deadline is 11:59 p.m. Central Time on 7/31. After this date, runners may switch to virtual (by 9/9) to keep their multi-year endurance streak alive.

There is a $30 Deferral Fee.


2023 Naperville Half Marathon (10/22/23)

2024 FVM (9/23/24)
(current distance or shorter)

  • Limited to the first 50 deferral requests. 
  • Deferring will break your Endurance streak. Changing to a Virtual Race will keep your streak going.
  • Deferring will break your Multi-Race Medal qualification. Selecting the virtual option will maintain your eligibility.
  • Charity registrations are not eligible for deferral.

Contact Us


Mailing Address
Fox Valley Marathon
PO Box 3955
St. Charles, IL 60174

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About the Fox Valley Marathon Races

Combining small race atmosphere with big race amenities, the Fox Valley Marathon, Half Marathon, and Fall Final 20 are ideal for both veterans looking for a fast race, as well as first timers looking for an uncrowded, supportive, family-friendly race setting. Starting and ending in historic downtown St Charles, IL, the course winds through picturesque Geneva, Batavia, North Aurora, and Aurora to a spectacular finish across the Fox River that can be seen from over a mile away. The course offers fantastic viewing spots for families and supporters, as well as frequent and well positioned aid stations that are staffed by the most supportive volunteer teams of any race you’ve run.

© Copyright 2021 Fox Valley Marathon Races

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