Naticook Challenge 5K Obstacle Course Race

Merrimack, New Hampshire, United States

Oct, 2026 (TBD)

OCR

Race Information

Merrimack Parks & Recreation hosts the annual Naticook Challenge Obstacle Course Race 5k. It's a trail-based race that involves challenges for the other parts of your body (crawling, climbing, or hanging, for example). Don't let this scare you away, the obstacles are designed with beginners in mind and are achievable by most people, even kids.

Run Pick of the Month – Maine Coast Marathon, Half and 5K

Run where the land meets the sea and experience the rugged beauty of New England in May 2026.

Use code MC15 to to score 15%  off your registration!

The course is a runner’s paradise, winding past pristine white-sandy beaches and tranquil marshlands that offer breathtaking coastal views at every mile.

But the experience doesn't end at the finish line. Join the official after-party at Wells Harbor Community Park.

Celebrate your victory with delicious snacks, live music, and, for runners 21 and over, two complimentary beers! It’s the perfect way to toast your accomplishment by the water.

Sign up for the ultimate Maine Coast experience!

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Race Facts

Race Size: 100 - 500

Elevation: Some Hills

Course Type: Obstacle

Boston Qualifier: No

Kids Run: No

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