Great Western Half-Marathon & 10K

St. Charles, United States • 2 May 2027

Great Western Half Marathon & 10K

The Great Western Half Marathon and 10K are organized by Fox River Trail Runners. The races use the western portion of the Great Western Trail and follow a flat, out and back course surfaced with limestone. The event continues a club tradition of more than 25 years of hosting this half marathon and 10K.

The trail has a rails to trails history: the Chicago Great Western Railway operated from 1885 to 1968, and the corridor has been a public use path since 1978. Results are recorded for recent years, including 2026.

Fox River Trail Runners donates five dollars per participant registration and accepts additional participant donations. Those funds are split equally among three local nonprofit mental health partners. In 2026 the combination of participant donations and the club contribution generated a total of $2,400 for the three local mental health charities. The organizer is a 501(c)(3) not for profit corporation based in Geneva, Illinois.

The club lists the next scheduled date as Sunday May 2, 2027 and notes that registration is not yet open. 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

Trail races at Wolf Road Woods on June 27, 2026 offer three loop choices covering 3, 6 and 9 miles with varied off-road surfaces, tiered registration fees and post-race refreshments and awards.

A loop format 40 or 50 mile trail event at Deer Grove East Forest Preserve on August 8, 2026. Aid station, crew access, and personal staging areas support runners over rolling woodland trails.

Loop-based trail event at Deer Grove East Forest Preserve in Palatine IL offering distances from 5K up to 50K. Each lap returns to a central start area with a fully stocked aid station amid prairie, wetlands, and woods.

A community cross country event in Mount Prospect offering 1, 2 and 3 mile races. Entry is $25 and proceeds benefit the Little Giraffe Foundation.

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