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Merrimac, MA · June 20, 2026 · Running
Jamaco River Run 2026
Merrimac, MA · June 20, 2026 · Running
DateJune 20, 2026
LocationMerrimac, MA
DisciplineRunning
RegistrationClosed
PriceFree entry
Divisions
5KDistance
1KDistance
About the race
The race.
The Jamaco River Run on June 20, 2026, in Merrimac, MA features a USATF certified 5K road race and a 1K kids' fun run. Registration and bib pickup begin at 8am at Waterhouse Field, with the kids' run starting at 9am and the 5K at 10am.
Results analysis
How the field ran.
202 finishers on record for Jamaco River Run 2026.
Race-day weather: 69F, partially cloudy
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