Race Discovery
Muddy Shamrock @ The Forge
Muddy Shamrock @ The Forge logo

Muddy Shamrock @ The Forge

Lemont, Illinois, United States View on map
Mar 13, 2027 (America/Chicago local time)
Trail running

About this race

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!
 
This early-season trail race will be run on wooded single & double-track trails with awesome scenery around the historic Lemont Quarries. Both races will traverse the single-track MTB trails within the woods and some gravel trails throughout the Forge and adjoining trail systems. 

Pick your distance

Trail running

Trail Half Marathon

2 loops mostly technical singletrack

Mar 13, 2027 Half-Marathon 9:00 AM
$65.00
Open

Trail Quarter Marathon

Mar 13, 2027 10.5K 9:00 AM
$50.00
Open

Typical race-day weather

Based on 5 years of Open-Meteo archive data for this event's race dates in Lemont, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 0.2° / Maximum temperature (race-week average) 11.3°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) -5.4° / Maximum feels like — heat index / wind chill (race-week average) 9.3°
Peak wind (km/h)
Strongest wind of the day (race-week average)
23.7
Precip (mm)
Precipitation over the day (race-week average)
4.0mm
Humidity
Mean relative humidity (race-week average)
66.8%
Sunrise
Sunrise at the start line on March 13, 2027 (CST)
Sunset
Sunset at the start line on March 13, 2027 (CST)
Daylight
Hours between sunrise and sunset on race day
11h 49m

The sun rises at 6:06 AM and sets at 5:56 PM local time (CST) in Lemont on March 13, 2027 — 11h 49m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near Lemont

Different organizers, within 40 miles, in the next three months

Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 7 Lemont events

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