Muddy Shamrock @ The Forge
Updated
Saturday, March 13, 2027, first start 9:00 AM, in Lemont (227 Heritage Quarries Dr.). Distances: 10K, Half marathon. Entry from $60 to $70; the Half marathon goes from $70 to $75 after January 30.
- Date
- Saturday, March 13, 2027
- Start time
- 9:00 AM (earliest wave)
- Location
- 227 Heritage Quarries Dr., Lemont, IL 60439
- Area
- South Suburbs, Chicago
- Distances
- 10KHalf marathon
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $60 to $70 plus the platform's processing fee
- Next price increase
- Saturday, January 30, 2027: Half marathon $70 → $75
- Registration
- Open. Opened March 14, online signup closes Sunday, March 14, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by January 30 to pay $70 instead of $75.
Course and race notes
2026 Muddy Shamrock Results. Woods, dirt, mud, roots, and maybe some other adventurous trail stuff will be experienced at the 6th annual Muddy Shamrock Trail Races The Forge. And now that we've earned the 4th leaf in our clover, the race is now named the MUDDY SHAMROCK!
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.