Fox Valley Winter Challenge Trail Series
St. Charles, United States • 22 Mar 2026
Fox Valley Winter Challenge Trail Series 10K : St. Charles, IL
The Fox Valley Winter Challenge Trail Series 10K takes place on March 22, 2026 at Hickory Knolls Discovery Center in St. Charles. It is the final race in a three-race winter trail series that follows earlier 5K and 8K events.
The course uses mixed trail surfaces, including dirt paths, crushed limestone, grass, gravel, and some pavement. There are a few short climbs and longer stretches that affect pacing. Trail conditions can vary widely in March and may be muddy, slick, or fast depending on weather.
Logistics note that the start and finish area will be near the Hickory Knolls Nature Pavilion, across from the community garden plots. Parking is free with a limited number of spaces in the circle drive and a larger lot by the pickle ball courts; parking near the Nature Pavilion is reserved for staff and volunteers. Bathrooms are available inside the Discovery Center and a porta-potty is located near the pavilion. There will not be a gear check.
There will be no water stations on course, but bottles of water and snacks will be provided at the finish. All finishers receive a medal and winter event swag. Series participants receive additional items based on how many races they complete, including a winter hat, bib snaps, and for completing all three, a hooded zip sweatshirt. Headphones are allowed and dogs are not permitted on the course. Visit the organization's website for the most recent information.