Muddy Shamrock @ The Forge

Lemont, United States • 13 Mar 2027

Muddy Shamrock @ The Forge

Muddy Shamrock @ The Forge is an early-season trail running event at The Forge: Lemont Quarries in Lemont, Illinois (227 Heritage Quarries Dr., 60439). The event uses wooded single and double track trails, mountain bike trails, and gravel sections around the historic quarries.

The course surface includes dirt, mud, roots, rocks, stumps, grass, and some short steep inclines and downhills. Gravel sections are mostly flat while single and double track sections present variable and occasionally technical terrain. Trail running shoes are recommended. The course uses a common start and finish line; the half marathon covers two laps and the quarter marathon covers one lap.

Distances:

  • Trail Half Marathon approximately 13.1 +/- miles
  • Trail Quarter Marathon approximately 6.6 +/- miles

There will be one aid station with water and sports drinks located at the beginning of the second lap for the half; participants are advised to plan on carrying personal hydration and fuel. Race entry includes chip-timed results with live splits, an event T-shirt, age group and overall awards, and a post-race gathering with food and beverages. Packet pick-up includes a bib with timing tag and swag for the first 200 registrants. Awards are given for overall male and female, masters, 10-year age groups, and additional categories. 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

Trail marathon and 10 mile on the Sag Valley Trail at Teason's Woods featuring substantial elevation, multiple aid stations, sunflower shirts and wooden finisher sunflowers, plus post race chili, beer and awards.

A timed endurance trail event near Willow Springs on a 4 mile loop with single and double track, rolling hills, a signature aid station offering snacks and drinks, and a mandatory reusable cup policy.

A chip timed *10K* trail run at The Forge Lemont Quarries featuring mostly crushed limestone surfaces, wooded scenery, competitive overall and age group awards, and a 450 participant capacity.

Experience a seasonal trail run through the natural twists and turns of Saw Wee Kee Park. Complete this bib timed race to earn a piece of the 2026 series medal and enjoy the summer landscape.

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.