SATURDAY, OCTOBER 4TH, 2025

The Naticook Challenge 5K Obstacle Course Race returns to Wasserman Park on Saturday October 4th for it's sixth year. Come and join Merrimack Parks & Recreation for this Annual 5K Race that is both fun and challenging to test your abilities.

If you are new to this, you may be asking yourself, what is an obstacle course race? It is a trail based race that takes place within Wasserman Park as well as on the Conservation Trails that border the Park and that involves challenges for the other parts of your body (crawling, climbing, or hanging for examples).

The course is a 5k distance and includes 12 or more beginner to intermediate level obstacles. There are obstacle bypass exercises available if unable to complete an obstacle.

The first 200 registered participants will receive an official Naticook Challenge Runners T-Shirt and a finisher's medal.

UPDATE: WE HAVE PARTNERED WITH SPARTAN!!! ALL NATICOOK CHALLENGE REGISTRATIONS WILL ALSO GET A COMPLEMENTARY RACE CODE TO AN END OF 2025 OR 2026 SPARTAN RACE!!! (taxes and fees not included, race code issued after the Naticook Challenge)

We are currently looking for volunteers to help us on Race Day for check-in, course monitors and awards. Volunteers are needed from 8:00 am - 10:30 am. If interested, click here to register.

Race Start Time: 9:00 am

Cost: $40

The total number of entries in the race is limited to 200 participants and we encourage people to register early. Runners will go out in small groups in different waves. Waves will be spaced out 3 minutes apart.

For questions, call 603- 882-1046 or email Program Coordinator James Golisano at jgolisano@merrimacknh.gov

REGISTRATION NOW OPEN

Race Rules & Guidelines

You can wear whatever you want but we suggest non cotton material that flexes.
No pets allowed
Runners must abide by all instructions given from the race staff and volunteers.
Runners under the age of 14, must be accompanied by an Adult.
No Strollers or wheeled instruments will be allowed on the race course
All entries are final and non-refundable.
Race will be held rain or shine.
Race Photos will be available for purchase

Photography Notice:

By attending this event; participant agrees that Town of Merrimack Parks & Recreation Dept may record or photograph the Event, (including You, your likeness and voice), and use it publicly or privately in any form of media, including for commercial purposes. By attending, You consent to the recording and photographing and grant Town of Merrimack Parks & Recreation Dept an unrestricted, perpetual, non-exclusive license, to take, use, display, perform, distribute or exploit for any lawful and commercial purpose any recordings or photographs. If you do not agree, please do not attend the event."

SATURDAY, OCTOBER 4TH, 2025

2025 Course Map

2025 Race Shirt

2025 Race Medal

Race Sponsor

Sponsor

Official Race Photographer

Official Race Photographer

Race Rules & Guidelines