F^3 Cap Sauers Trail Marathon & 10 Mile logo
running

F^3 Cap Sauers Trail Marathon & 10 Mile

Date
May 8, 2027
Distance
Trail Marathon · 10 Mile

From the Organizer

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

Distances & Pricing

Trail Marathon7:30 AMRegister →
10 Mile8 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.

Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.

The half marathon rewards people who show up for the boring training miles.

How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the F^3 Cap Sauers Trail Marathon & 10 Mile?
F^3 Cap Sauers Trail Marathon & 10 Mile is a running event held in Palos Hills, Illinois. Learn more about the different endurance sports here.
When and where is the F^3 Cap Sauers Trail Marathon & 10 Mile?
Saturday, May 8, 2027 in Palos Hills, Illinois at 11200 S Willow Springs Rd, Palos Hills, IL. Check the official event page for exact start times and wave schedules.
How do I register for the F^3 Cap Sauers Trail Marathon & 10 Mile?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

F^3 Cap Sauers Trail Marathon & 10 Mile

May 8, 2027

Register →