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Jamaco River Run

Sat June 15, 2024 Merrimac, MA 01860 US Directions
Countdown to Race Day


$5 discount for 16 & Under

5K (3.1 miles) Run/Walk

$30 10:00AM EDT Price increases after June 14, 2024 at 11:59pm EDT

Kids 1K Fun Run (7 and Under)

$20 9:00AM EDT Registration ends June 15, 2024 at 9:30am EDT
Open to ages 7 and under.

Race Website

Additional race information can be found at


Waterhouse Field
74 East Main Street
Merrimac, MA US 01860


The 7th annual Jamaco River Run and Post-Race celebration will be held once again on Saturday, June 15, 2024.  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+).  

This year, we are pleased to announce that we are partnering with the RLG Foundation to raise funds for leukemia awareness, research and support of families impacted by this terrible disease.

Reid Landry Garrant was a 22 year old young man who graduated from Pentucket Regional High School in 2014. He played Varsity Football & Lacrosse and went on to play football for The University of Massachusetts, Dartmouth. During high school, Reid and his family lived in West Newbury and Merrimac and he was well-loved by his family, friends and the entire Pentucket community.

On June 1, 2018, Reid passed away from Acute Promyelocytic Leukemia or APML/APL - a cancer of the white blood cells, after only being diagnosed the previous day from Dana Farber Cancer Institute doctors. Reid’s Foundation was born out his family wanting to honor his name and give back to other families having to deal with Leukemia.

Reid’s motto was “Family, God & Football” and this statement is what will guide his foundation’s mission to help others. Scholarships and awards are set up in Reid’s name at Pentucket Regional High School.  A fund has also been established to help families dealing with Leukemia and his foundation will work to create awareness & funding working with institutions such as Dana Farber Cancer Institute, American Red Cross, Leukemia & Lymphoma Society, Be The Match and individual families.

For 2024, the funds raised by our race will be used to benefit the RLG Foundation.

We are looking forward to our biggest and best race yet!

~ the Jamaco River Run Board of Directors

Refer Friends and Family

When you sign up for the Jamaco River Run you’re eligible to earn a cash reward when you refer friends and family to sign up. 

Invite them to compete with you to complete the distance first or along with you.

Follow these simple steps...

  • Sign up for the Jamaco River Run.
  • You’ll receive a unique referral link in your confirmation email.
  • Share the link with your friends, family or post on social media. 
  • Each time someone signs up through your link, you'll accrue one referral. 
  • Earn five referrals and get $20 credited back to you. Easy right?!?!

Race Contact Info

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