Muddy Shamrock @ The Forge

MAR

13

2027

Early-season trail races at The Forge in Lemont, Illinois, on wooded single and double track trails with mud, roots and gravel. Distances offered are 13.1 miles and 6.5 miles with technical singletrack sections.

Sat 13 Mar 2027

Lemont, Illinois

Website

13 miles 7 miles

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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.

13 mi

Trail Half Marathon

7 mi

Trail Quarter Marathon