Fox Valley Marathon Races

SEP

20

2026

Join the Fox Valley Marathon Races in St. Charles, Illinois on September 20, 2026, with marathon, half, 20 mile and 5K options. Start and finish in historic downtown and enjoy a scenic route through Geneva, Batavia and North Aurora with a finish across the Fox River visible from over a mile away.

Sun 20 Sep 2026

St. Charles, Illinois

Website

Marathon 20 miles Half Marathon 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

The Fox Valley Marathon Races on September 20, 2026, take place in St. Charles, Illinois. The event includes a Marathon, Half Marathon, Fall Final 20 and a 5K. The course starts and ends in historic downtown St. Charles and passes through Geneva, Batavia and North Aurora. The finish is across the Fox River and is visible from over a mile away.

Course details and 2026 changes

The route provides multiple aid stations that are staffed by volunteer teams. For 2026 there are two noted changes: a "decline shirt" registration option for the 13.1 km, 20 km, and 26.2 km distances that reduces the fee by $15 compared with 2025, and trail improvements for the 20 and 26.2 distances with new maps planned. Visit the organization's website for the most recent information.