Trail Running calendar near St. Charles 2026-2027

A trail event at Deer Grove Forest Preserve near Palatine, IL on April 24, 2027, offering 5.5 mile, 25K, 50K and 50 mile distances with a single aid station at the start and a playful, community-focused atmosphere.

A flat out and back half marathon and 10K on the limestone Great Western Trail, organized by Fox River Trail Runners, with part of registration fees donated to three local mental health charities.

Trail marathon and 10 mile on the Sag Valley Trail at Cap Sauers Nature Preserve in Palos Hills, IL, with wide horsetrail, notable elevation gain, and staffed aid stations along the routes.

The Frontline OCR will take place in Byron on Saturday 22 May 2027. You can run between 5 and 10 kilometers.