Fox Valley Marathon
Fox Valley Marathon follows the Fox River through Chicago's western suburbs, offering a flat-to-rolling Boston qualifier with strong pacing support.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked August 4, 2026.
Quick facts
- Boston qualifier along the Fox River.
- Pace groups support a wide range of goal times.
- Marathon, 20-mile, and half-marathon race weekend.
About the Fox Valley Marathon
Fox Valley's September race weekend is a goal-oriented suburban Chicago event with marathon, 20-mile, half marathon, and shorter options. River towns give the course a cohesive sense of place.
Course
The certified course tracks the Fox River on roads and paved paths through communities including St. Charles, Geneva, and Batavia. Frequent turns and small rollers break up an otherwise quick profile.
Race-day weather
Late September can begin cool and finish warm or humid. River shade helps in places, while sun and wind become more noticeable on open segments.
Past Fox Valley Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, September 20, 2026 | Upcoming | — |
| 2025 | Sunday, September 21, 2025 | Completed | Open results |
| 2024 | — | Completed | Open results |
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Fox Valley Marathon FAQ
When is the Fox Valley Marathon?
The 2026 Fox Valley Marathon is on Sunday, September 20, 2026.
Is Fox Valley Marathon a Boston qualifier?
Yes. Fox Valley Marathon is a Boston Marathon qualifier. To use the result, you must run the certified full-marathon course within the qualifying window and meet the current standard for your age and gender. Meeting the standard lets you apply but does not guarantee entry, and net-downhill courses can receive a time adjustment under current B.A.A. rules. Review the Boston qualifying times and downhill-course rules, or browse upcoming Boston qualifier marathons.
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