location_city Worcester
location_on Massachusetts
flag United States
calendar_today 15 Mar, 2026
directions_run Running
language Official Website
RegisterThe Guinness Celtic 5k is a fun Irish race (as always, walkers are welcome!) in Worcester, MA, before the Annual St Patrick's Day Parade. Watch the parade after the race from the beer garden at the finish line.
The Guinness Celtic 5K registration is available WITH or WITHOUT a Guinness Celtic 5K medal. Please note, this medal is for the Guinness Celtic 5K only and is separate from the Worcester Triple Crown Finisher's Medal detailed below in our new 3 Race Bundle.
Looking for an extra challenge? Join us for the Inaugural Greendale Physical Therapy Worcester Triple Crown, a 3-Race 5K series that celebrates some of the most fun holidays of the year, including the Worcester Jingle 5K on December 7, 2025, the Guinness Celtic 5K on March 15th, 2026, and concluding with the Worcester Cinco (5)K on Sunday, May 3, 2026)
Participants in the full Triple Crown will score a commemorative pint glass at EACH of the three races, as well as a Finisher’s Medal at the finish line of the Worcester Cinco K. Please note, this medal is SEPARATE from the Guinness Celtic 5K medal that is an optional add-on for the Guinness Celtic 5K registration.
To register for the Greendale Physical Therapy Worcester Triple Crown, simply select the 3-Race bundle on any of the race registration sites!
Date: Sunday, March 15, 2026.
Start: Celtic 5k start time: 11:00 a.m. Kids Leprechaun Run start time: 10:30am (ages 12 and under on race day) Kids distance approximately 1/4 mile. Parents may run with their kids.
Location: Elm Park, 284 Highland St, Worcester, MA 01602. Note: The race start and finish are located on Park Avenue near the intersection of Park Avenue and Highland Street.
T-Shirts are not guaranteed for walk up registrations on race day.
No pets allowed. Service animals are permitted.
$33 to 12/31/2025
$35 1/1/2025 to 1/31/2026
$37 2/1/2025 to 3/15/2026
*Online registration closes Saturday, March 15 at 8:00 p.m. Sorry no refund and no pets allowed.
Kids Leprechaun Run
$15 to 12/31/25
$16 1/1/2025 - 1/31/2026
$17 2/1/2025 - 3/15/2026
Pre-Race Packet Pickup #1
Friday March 13th
Noon to 5pm
Sneakerama, 12 Lake Ave, Worcester, MA
Pre-Race Packet Pickup #2
Saturday, March 14th
10am to 5pm
Sneakerama, 12 Lake Ave, Worcester, MA
Race Day Packet Pickup
Sunday, March 15th, 2026
Park Ave (next to Elm Park)
Worcester, MA
9:00am – 11am
Walk up Entry Fee // 5K: $45
Walk up Entry Fee // Kids Run (12 and under): $20
Please note, t-shirts are not guaranteed for walk up registrations on race day.
Individual Awards
Top 3 Overall
Winners (Under 19)
Winners (age 20-29)
Winners (age 30-39)
Winners (age 40-49)
Winners (age 50-59)
Winners (age 60-69)
Winners (age 70+)
Team Award
Prize will be awarded to the top overall team.
Top 3 score based on chip time.
No limit on Team size.
Online entry for Teams only.
Mar 15, 2026
Distance — 1K
Type — Road running
74 days remaining
Mar 15, 2026
Distance — 5K
Type — Road running
74 days remaining
These values represent the 3-year monthly averages for March in Worcester.
Explore fine arts, history, and take in a show in Worcester, a medium sized city in Central Massachusetts about an hour's drive west of Boston. Worcester's seven hills and their valleys contain top notch museums, nine colleges and universities, beautiful parks, and food from all over the globe.
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location_on Worcester, Massachusetts, US
calendar_today Apr 11, 2026
location_on Hopkinton, Massachusetts, US
calendar_today Apr 11, 2026
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