When does the Muddy Shamrock @ The Forge sell out?

Muddy Shamrock @ The Forge hasn't published a hard registration deadline. Most races of this size raise the entry fee in tiers (early-bird, regular, late) and can sell out without warning — sign up early if you're committed.

Half Marathon

Trail

Muddy Shamrock @ The Forge

Q: How hard is the Muddy Shamrock @ The Forge Half Marathon?

Muddy Shamrock @ The Forge is a Half Marathon on a trail course in Lemont, Illinois. We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.

Q: What should I wear for the Muddy Shamrock @ The Forge?

Race-day weather in Lemont can swing year over year, so dress for the forecast on the day. As a rule of thumb, dress for ~10°F warmer than the standing temperature once you start running. Layer with a throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, and a singlet plus a visor when it climbs above 60°F. The published start time is 9:00 AM. Check the race-day weather forecast on this page closer to the date for a specific recommendation.

March 14, 2026

Lemont, Illinois

Rolling Course

Decision scores

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Best for

Trail / hill challenge

About the Race

2025 Muddy Shamrock Results Woods, dirt, mud, roots, and maybe some other adventurous trail stuff will be experienced at the 5th 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 grav...

Course Profile

Course profile data unavailable for this race.

Course features

Terrain

trail

Surface

Trail

Elevation gain

Not measured

Course type

Not stated

Field size

Unknown

Boston qualifier

Course map

Not yet published

Elevation profile

Not measured

Accessibility & inclusion

Walker-friendly

Stroller-friendly

Dog-friendly

Kids race

Vibe & community

We don't have vibe tags for this race yet — organizers can claim the listing to add them.

No charity partner listed.

History & past results

Years running

Unknown — claim to add

Recurrence

Annual (assumed)

Past finisher times and year-over-year participation will appear here once the organizer publishes them.

Reviews

No reviews yet

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Common questions

How hard is the Muddy Shamrock @ The Forge Half Marathon?

We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.

What should I wear?

Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.