Great Western Half-Marathon & 10K

St. Charles, United States • 3 May 2026

Event Overview

The Great Western Half-Marathon & 10K is hosted by the Fox River Trail Runners. The event has a history of over 25 years. The event features two distances: a half-marathon and a 10K.

Course Details

Both races are described as competitive and flat out-and-back courses. They take place on the Great Western Trail, which is a public use path on a former railway line. The western portion of the trail is used.

Event Date and Charity

The event is scheduled for a Sunday in early May. The organizing club donates $5 from each participant's registration fee to charity. Additional participant donations are also collected. These funds are split equally among three local non-profit mental health charity partners. In a previous year, the combined donations totaled $4,000 for the three charities. Visit the organization's website for the most recent information.

Race information

Half Marathon
Half Marathon
10 km
10k
Visit the organization's website for the most recent information.
Trail runs nearby

Experience the rugged beauty of the historic Lemont Quarries at this early season trail event. Choose between a half or quarter marathon over technical terrain featuring woods, mud, and scenic single track trails.

The Fox Valley Winter Challenge Trail Series concludes with a 10K trail race at Hickory Knolls Discovery Center. Runners tackle a mixed terrain course with potential winter conditions. Finishers earn a medal and swag, with special gear for..

Hit the trails for Chauncey's 4 at The Farm, a 4-mile stampede through the historic St James Farm. It's the kick-off event for the 2026 trail running series. Runners can tackle the rolling limestone and wooded paths for a chance at awards a..

Celebrate Earth Day on the trails at Veteran Acres park. Choose from a 50K, 15-mile, or 5-mile loop on scenic single-track. The event focuses on being landfill-free and offers awards for top finishers.