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F^3 Cap Sauers Trail Marathon

Palos Hills, United States • 9 May 2026

F^3 Cap Sauers Trail Marathon & 10 Mile takes place at Teason’s Woods in Palos Hills, IL, inside Cap Sauers Holding Nature Preserve—the largest undeveloped tract in Cook County. The event features two trail distances on the Sag Valley Trail system: a marathon (26.2 miles) and a 10-mile race, both on wide horsetrails with two-way traffic and occasional horses on the course. Elevations are substantial: about 1,050 feet for the marathon and 670 feet for the 10-miler.

Aid stations appear at multiple turnarounds. Perks include a sunflower-themed T-shirt, wooden finisher medals, and post-race chili and beer. It’s described as one of Chicago’s few remaining independently-owned large races.

Packet pickup is on race day. Visit the organization's website for the most recent information.

United States Illinois Palos Hills

Race information

Website Registration
10 Mile
Trail Marathon
Visit the organization's website for the most recent information.
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