Fox Valley Marathon Races

SEP
20
2026
Experience a scenic run through historic St. Charles and neighboring river towns. Choose from marathon, 20 mile, half marathon, or 5K distances featuring a spectacular finish across the Fox River.
Sun 20 Sep 2026
26 miles 20 miles 13 miles 5 kilometers

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

Fox Valley Marathon Races

The Fox Valley Marathon Races take place in St. Charles, Illinois. This event provides several distance options for participants, including a full marathon, a 20-mile race, a half marathon, and a 5K. The courses are designed with trail sections and have undergone recent improvements to the maps and routes.

The races start and finish in historic downtown St. Charles. The course layout follows the Fox River, passing through several neighboring communities including Geneva, Batavia, and North Aurora. The final stretch features a finish across the river that is visible to runners from more than a mile away.

Available race distances include:

  • 26.2 miles (Marathon)
  • 20 miles (Fall Final 20)
  • 13.1 miles (Half Marathon)
  • 5 km (Fox Valley 5K)

The event includes amenities such as a pace team and frequent aid stations positioned along the route. Participants who compete in multiple editions of the race can participate in a 5-year medal series. For those preparing for the event, course preview runs are organized prior to the race date. Race week features include results tracking, official photography, and awards for various categories.

Registration options for the longer distances include a choice to decline the race shirt for a reduced entry fee. The event also maintains a charity and fundraising program, involving local run clubs and volunteer teams to support the race operations. Visit the organization's website for the most recent information.

26 mi
Marathon
20 mi
Fall Final 20
13 mi
Half Marathon
5 km
Fox Valley 5k