Road

Chesterfield Shamrock 5k/10k & Leprechaun Fun Run

Q: How hard is the Chesterfield Shamrock 5k/10k & Leprechaun Fun Run 5K?

Chesterfield Shamrock 5k/10k & Leprechaun Fun Run is a 5K on a road course in Chesterfield, Missouri. 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 Chesterfield Shamrock 5k/10k & Leprechaun Fun Run?

Race-day weather in Chesterfield 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 8:30 AM. Check the race-day weather forecast on this page closer to the date for a specific recommendation.

Q: When does the Chesterfield Shamrock 5k/10k & Leprechaun Fun Run sell out?

Chesterfield Shamrock 5k/10k & Leprechaun Fun Run 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.

March 14, 2026

Chesterfield, Missouri

Rolling Course

Decision scores

Six 0–100 scores telling you, at a glance, who this race is for.

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Best for

Great for beginners

PR-friendly

Family-friendly

About the Race

The City of Chesterfield's Annual Shamrock Run will take place on March 14, 2026, at the Chesterfield Valley Athletic Complex. The race will consist of a 5K or 10K race, as well as a Fun Run Race for kids! The 5k and 10K will begin at 8:30am and the Fun Run will begin at 10am. Each participant will receive a shirt if registered by February 22. First place in age category will receive a medal for 5K and 10K. Fun Run racers are all guaranteed medals. SHAMROCK FEES: 5K/10K: $25 Early Bird - thro...

Course Profile

Course profile data unavailable for this race.

Course features

Terrain

road

Surface

Road

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

Yes

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

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Common questions

How hard is the Chesterfield Shamrock 5k/10k & Leprechaun Fun Run 5K?

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.