20th Shamrock Shuffle "NEW" Half-Marathon & 5k & NEW 2 Person Relay
Decision scores
Six 0–100 scores telling you, at a glance, who this race is for.
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About the Race
IMPORTANT RACE NOTE... IF YOU ARE A WALKER WE WOULD LOVE TO HAVE YOU, BUT YOU MUST DO THE 5K. WE DO NOT HAVE A 1/2 MARATHON WALK DIVISION. WE NEED TO GET EVERYONE OFF THE COURSE IN 3:15:00 WHICH IS 15 MINUTES PER MILE FOR THE HALF MARATHON, WHICH IS ACHIEVABLE FOR RUNNERS AND JOGGERS AND EVEN JOG/WALK COMBO FOLKS. BUT HAVING THE SAFETY STAFF/RANGERS/EMT ON THE COURSE FOR OVER AN HOUR EXTRA COULD COST OVER $1000 EXTRA IN EXPENSES. WE THANK YOU FOR YOUR UNDERSTANDING THAT THIS IS NOT A HALF MAR...
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Course features
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Vibe & community
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History & past results
Past finisher times and year-over-year participation will appear here once the organizer publishes them.
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Common questions
How hard is the 20th Shamrock Shuffle "NEW" Half-Marathon & 5k & NEW 2 Person Relay 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.
When does it sell out?
No published deadline. Most races raise the entry fee in tiers and can sell out without warning — sign up early if you're committed.
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