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Jamaco River Run

Sat, Jun 20, 2026, 10:00 AM EDT

Location
Merrimac, MA
Waterhouse Field, 74 East Main Street, 01860
Featured distance
5K
Type
RUN
Official registration

Sign up and verify details on the organizer’s official page.

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Course feel, difficulty, and community fit are being added to this listing. Check back, and always confirm details on the official registration page.

At a glance

Great for

  • Family Friendly

Great for: families

Perks & features

  • After-Party
  • Food & Drink
  • Shirt

From the public listing — confirm on the official site.

Auto-drafted from the public listing — confirm details on the official event page before signing up.

Vibe Check

Easygoing

Rolling road course

  • Rolling area

Based on terrain, weather, and distance data.

The course

  • —
From the organizer

The 10 th annual Jamaco River Run and Post-Race celebration will be held on Saturday, June 20, 2026.  This is a fun, family-friendly day complete with a Kid's Fun Run, a USATF certified & sanctioned 5K road race, and a post-race event with music, a craft beer tent, burgers and dogs, activities for the kids, award ceremony and an amazing prize raffle.  Registration & Bib Pickup will begin at 8am at Waterhouse Field (74 E. Main St, Merrimac, MA).  Free parking is available on site.  The Kids Fun Run kicks off at 9am followed by the 5K walk/run at 10am.  The first 200 registrants receive a custom commemorative t-shirt, and a free beer (21+).

We are excited for 2026 to be our biggest turnout yet, and we once again look forward to giving back to our local community! Thank you for your support!

~ the Jamaco River Run Board of Directors

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