Muddy Shamrock @ The Forge

Prepare for an invigorating start to your trail running season at the Muddy Shamrock @ The Forge, returning to Lemont, IL, on Saturday, March 14, 2026. This popular early-season event, offering challenging 13.1-mile (Half Marathon) and 6.5-mile (Quarter Marathon) distances, promises an authentic off-road experience within the picturesque setting of The Forge: Lemont Quarries. Runners will navigate a dynamic course featuring wooded single and double-track mountain bike trails, interspersed with sections of gravel, all set against the backdrop of the historic Lemont Quarries and I&M Canal. Expect varied terrain including dirt, roots, rocks, and the namesake mud, with a few technical spots presenting short but steep inclines and downhills to test your mettle. While generally not featuring significant elevation changes, the diverse surfaces make trail running shoes a recommended choice.

Participants will complete one lap for the Quarter Marathon and two laps for the Half Marathon, all beginning and ending at a common start/finish line within The Forge. One aid station, offering water and sports drinks, will be available at the start of the second lap for half marathoners, though runners are encouraged to carry their own hydration and fuel as the race aims to be cupless. Typical race day conditions in mid-March often see highs around 48°F and lows near 30°F, with a 12% chance of precipitation, creating the potential for an even more "muddy" adventure.

The Muddy Shamrock @ The Forge is celebrated for its unique course and vibrant atmosphere, offering an exhilarating challenge for both seasoned trail enthusiasts and newcomers. Your race entry includes chip-timed results, the chance for overall and age group awards, a commemorative Muddy Shamrock t-shirt, and a lively post-race party complete with food, beer, and music, fostering a strong sense of camaraderie and celebration.