# F^3 Cap Sauers Trail Marathon & 10 Mile

- **When:** Fri, May 7, 2027 · 7:00 PM CDT
- **Where:** 11200 S Willow Springs Rd, Palos Hills, IL, 60465
- **Event page:** https://runthis.run/event/rs-142648-f-3-cap-sauers-trail-marathon-10-mile

## Registration

Register on the event's own site: https://runsignup.com/Race/IL/PalosHills/F3TrailMarathon?aflt_token=58wBqomPr6bPwa1YDhuKo0IQvrNCjzTq

## Description

Explore the Cap Sauers Holding Nature Preserve - the largest tract of undeveloped land in Cook County, IL. This race will cover every inch of maintained trail within the Nature Preserve. With over 1000 ft of elevation, this marathon is mountainous by Chicago standards!

The course uses the Sag Valley Trail system, covering the Yellow, Green, Blue & Tan trails. The whole course is wide horsetrail, allowing for 2-way traffic and encouragement from fellow participants. 

Results here:  https://sites.chronotrack.com/event/92163/results

2026 Photos here:  https://www.flashframe.io/search/2861/

2025 Photos here:  https://www.highfivebb.com/Running/F3-Cap-Sauers-Trail-Marathon-10-Mile-May-10-2025

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Source: [https://runthis.run/event/rs-142648-f-3-cap-sauers-trail-marathon-10-mile](https://runthis.run/event/rs-142648-f-3-cap-sauers-trail-marathon-10-mile) — data from Run This (runthis.run).