Fox Valley Marathon Races
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Fox Valley Marathon Races - St. Charles, IL
The Fox Valley Marathon Races on September 20, 2026 include a marathon, half marathon, Fall Final 20 and a 5K. The event presents a combination of a small-race atmosphere with larger race amenities and organized support along the course.
Races start and finish in historic downtown St. Charles, Illinois. The course winds through Geneva, Batavia and North Aurora and concludes with a finish across the Fox River that is visible from over a mile away. The route offers spectator viewing spots and frequent, well positioned aid stations staffed by volunteer teams.
Organizers note changes for 2026 across all courses and trail improvements for the 20- and 26.2-mile courses, with updated maps posted. For the 13.1, 20 and 26.2 distances there is a decline shirt option that reduces the fee by fifteen dollars compared with 2025. The event also features a five year medal series and related discount offerings.
Distances
- 26.2 miles Marathon
- 13.1 miles Half Marathon
- 20 miles Fall Final 20
- 5K Fox Valley 5K
The description focuses on course layout, race distances, volunteer-supported aid stations and the 2026 course updates. Visit the organization's website for the most recent information.
