Muddy Shamrock @ The Forge

Lemont, United States • 13 Mar 2027

Muddy Shamrock @ The Forge - Lemont, IL

Muddy Shamrock @ The Forge is the sixth annual early-season trail race held at The Forge in Lemont, Illinois (227 Heritage Quarries Dr., 60439). The course runs on wooded single and double track trails around the historic Lemont Quarries and includes dirt, mud, roots, and other typical trail features.

Both distances traverse single-track mountain bike trails within the woods and use gravel trails through the Forge and adjoining trail systems. The half marathon is organized as two loops and is described as mostly technical singletrack.

  • 13.1 Miles: 2 loops, mostly technical singletrack
  • 6.5 Miles: single-track MTB trails and gravel sections

Registration opened March 14, 2026 and closed May 3, 2026; listed fees were $55 for the half marathon and $40 for the quarter marathon. The event name was changed to MUDDY SHAMROCK after earning the fourth leaf in the clover. Visit the organization's website for the most recent information.

Race information

13 mi
Trail Half Marathon
7 mi
Trail Quarter Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

H-F Beast Obstacle Course Dash in Homewood, IL on July 12, 2026 features two age categories with obstacle runs. The event awards finisher medals and t shirts and includes an optional prep course in June.

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.

Loop based endurance event at Busse Woods on August 15, 2026 offering repeated 3.1 mile laps over smooth crushed limestone and packed gravel. Distances range from 5K to 50K with a central aid station and open loop format.

Continuous 3.1 mile loop at Busse Woods near Elk Grove, IL offering 40 and 50 mile options with a fully stocked aid station every lap and a 12 hour cutoff. Runs alongside The Next Loop series but is scored separately.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.