Jamaco River Run
When is Jamaco River Run?
Jamaco River Run takes place on Saturday, June 20, 2026 in Merrimac, MA.
What distances does Jamaco River Run offer?
Jamaco River Run offers 1 event: ~5K (3.2 miles) Run/Walk.
| Event | Distance | Price | |
|---|---|---|---|
| ~5K (3.2 miles) Run/Walk | 5.0 km | $25.00 | Register |
How much does Jamaco River Run cost?
Registration for Jamaco River Run starts at $25.00.
Where is Jamaco River Run held?
Jamaco River Run is held in Merrimac, MA at Waterhouse Field.
About Jamaco River Run
The 10th 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
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?!?!