In 141 days · Sat, Mar 13, 2027
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Saturday, March 13th, 2027
277 Ocean Street, Marshfield MA
5K
31–46°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2026
28–42°F
dry
2025
36–42°F
dry
2024
34–46°F
dry
2023
34–42°F
rain
2022
21–37°F
dry
2021
29–46°F
dry
2020
40–59°F
rain
2019
26–39°F
dry
2018
31–38°F
rain
2017
12–30°F
dry
Best months to race in Massachusetts →
About this race
Come celebrate St. Patrick’s Day at “America’s Most Irish Road Race”! Wear your green and join 4,000 runners, walkers and crawlers at the South Shore’s premier road race! Flat, fast, USATF certified 5K ocean course with cash prizes ($683,$250,$100) for the top three overall male and female, along with $317 ($1,000 total!) for a new male or female course record! (M-14:39 & F-16:13). Age group awards first through third. Great finish parties at the pubs and restaurants of Brant Rock! A fun day for all!
Registration Price
Only $30.00 through 12/31/26
$35.00 through 3/3/27
After 3/3/27 and Same Day Registration - $40.00
$25.00 18 and under.
Shirt deadline is 2/6/27
Course map
Train with a club
Run clubs near Marshfield to train with before race day.
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