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The 7th annual Jamaco River Run and Post-Race celebration will be held once again on Saturday, June 21, 2025. 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 live music, a craft beer tent, burgers and dogs, homemade ice-cream, 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, a swag bag, and a free beer (21+).
