Action Athletics: Boston's Premiere Obstacle Training Gym
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REGISTRATION TIPS AND FAQs

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CREATE ACCOUNT
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When you create an account you'll be prompted to sign our waiver
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Credit card must be under YOUR profile, not your child's
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Forgot your designated time?
​Go back to Ninja Kids homepage

BE READY TO GO!

* BE PREPARED! Make sure you follow all the steps listed above BEFORE registration day.

* DETERMINE YOUR AGE GROUP (age as of 9/1/2025) and  KNOW WHICH CLASS(ES) YOU WANT
We recommend getting together your 1st, 2nd and 3rd choices. Some classes fill faster than others. Better to be more prepared than not! (schedules can be found here for  Boston --  Norwood   -- Wellesley )
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* FOR PIKE 13 REGISTRATION 
Be signed into Pike13 and on the Pike13 class page, so you can click "ENROLL" at 10:00! 
additional tips: 
- be sure to be on the Pike13 page, and not just the website! 
- if you are interested in multiple classes have a window open for each class; just in case your first one fills, you are ready for the next one!
- see below for tips on registering multiple kids


* FOR FORM REGISTRATION - WELLESLEY 4-5 and 6-8 ONLY 
> FORM TUTORIAL HERE <
If you are enrolling via form, be ready to click the form link  at 10:00AM!
And be sure to have the following information ready:
  • Parent or Account Manager First Name
  • Parent or Account Manager Last Name
  • Email
  • Phone Number
  • Ninja’s First Name
  • Ninja’s Last Name
  • Ninja’s Birthdate
  • RANKED CLASS PREFERENCES - to try to get everyone into classes, we will be asking for a ranked class preference! If a class does not work for your schedule, you can select "not interested" and it will not be considered for enrollment.

You can register up to TWO kids via the form (either for the same class or for different classes).  The first kid must be in a 4-5 or 6-8 year old class, but the second one can be older!   If you need to register more than 2 kids, please fill out an additional form.  Both kids are required to be under the same account manager.  Please do not register for any friends under your account.

How the process will work:
  • Form enrollments are managed by time submitted, so please submit ASAP to get the class of your choice!   The form will be available at 10:00 on Monday morning.
  •  We will notify you of your enrollment status before 9:00 AM Tuesday morning (so you can register for another location if you are not able to get into Wellesley!)
  • You will be automatically enrolled in any of your choice classes (in order of preference and availability). Please make sure to select "Not Interested" if a class does not work with your schedule.
  • You will be asked if you want to be put on the waitlist in case a spot is not available.
  • If you are interested in taking a class with a friend, be sure to mention that friends name at the end of your form! We will try our best to get them both into the same class! 

FAQs

WHEN CAN I ENROLL FOR CLASSES?
Fall Registration Opens online July 28th-31st (exact date depends on age and location - return to the Ninja Kids Homepage  for details). Once registered for our Ninja Kids classes, you are registered for the entire school year (through June 20, 2026). 

To register for an upcoming session please fill out this form (available after September), and we will contact you if a spots opens up!
my desired class is full, what should i do?
If a class is full, you will see "Event is full" when you click to enroll in Pike13. If that happens, get on our waitlist!  There will be a link to the waitlist on the class page in Pike13 and on our website.
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​​WE HIGHLY RECOMMEND YOU GET ON A WAIT LIST FOR MULTIPLE CLASSES IF YOUR CLASS IS FULL!  There are always changes that happen after the initial registration and spots do open up! We always contact the waitlist first. 
I HAVE MORE THAN 1 CHILD, HOW CAN I REGISTER BOTH?
FOR PIKE 13 REGISTRATION ONLY:
Since the system only allows one child's registration at a time, you will need to repeat the process for additional children. Once enrolled you will receive an email with confirmation of the class day and time for
each child, and a receipt for each transaction.  If you do not receive both, then you have not successfully registered them in classes.
  • TIPS to help get multiple kids in:
    • Have someone else help with registration and have them register one kid!  They do not need to have a separate account. You both should be able to be logged into your account from multiple devices. (if you are sharing a password, always be sure to sure to change it after!).  Or you can use multiple parent accounts!  If you need help with set up, please reach out to us before registration day.
    • ​​OR have multiple browsers/tabs open (one for each child) and they should be logged into Pike13 and ready to click enroll.  When registration opens you can select Enroll for each child FIRST, then complete checkouts.   ​(once you click enroll it will hold your spot).
    • Do not purchase any additional passes when checking out - this will NOT enroll any additional children into that class!

​For form registration (see above)
HOW LONG ARE THE SESSIONS?
Each session has 9 classes; 8 weeks of structured classes that focus on a different skill each week, completing each session in the 9th week of class with ninja courses (buzzers and all!)!  Parents are welcome to come and watch their ninjas showcase the skills they've learned in a fun, laid back, competition/course setting.

Each session registration requires at least a full session commitment. 
Full season calendar here for session beginning/end dates, closures, registration and unenrollment dates
HOW LONG ARE THE CLASSES?
Classes meet 1x per week and are either 60 mins or 45 mins long depending on the class.
​If you would like to register for multiple classes please let us know and we can see if we can accommodate your request. 
WHAT HAPPENS IF MY CHILD MISSES A CLASS?
MISSED CLASS Policy
An open gym pass will be issued for any missed classes. 
  • Open Gym passes can be used at Open Gyms in any location.  Pre-registration is required. 
  • Open Gym passes cannot be applied to other services and are not transferrable to other ninjas. 
  • Open Gym passes issued for a class absence EXPIRE 2 MONTHS FROM THE DATE OF ISSUE.
I'M INTERESTED IN MULTIPLE CLASSES A WEEK
During our initial registration we do our best to get as many kids into our program, therefore we ask that you don't register for multiple days.  HOWEVER, if there are spots available, we might be able to accommodate!  Please email us at [email protected] if you are interested in multiple days!
I'M INTERESTED IN BOOKING A PRIVATE CLASS
Click here to find out more information on our private classes!

About Us

We are Boston's premiere obstacle and personal training studio. We have an ever-growing number of obstacles designed by real American Ninja Warriors. Our courses are constantly changing and limited only by the imagination of our coaches and athletes. At Action Athletics, limitations are temporary and impossible is just a suggestion. Beginners, seasoned athletes, kids, American Ninja Warriors, and obstacle course racers all train at Action Athletics.

Contact Us

Phone: 617.916.9957 - or - Email: [email protected]
Action Boston
42 Guest Street
Boston, MA 02135
Action Norwood
1400 Providence Highway
Suite 3200
​Norwood, MA 02062

​​Action  Wellesley
475 Washington Street
Wellesley MA, 02482


Connect with Us

  • Home
  • VACATION WEEK
  • KIDS
    • 2025-2026 CLASSES
    • OPEN GYMS >
      • BOSTON OPEN GYMS
      • NORWOOD OPEN GYMS
      • WELLESLEY OPEN GYMS
  • ADULTS
  • PARTIES & EVENTS
  • COMPETITIONS
  • MERCH
  • CAREERS
  • Our Coaches
  • Contact Us
  • Boston Home
  • Norwood Home
  • Wellesley Home
  • MERCH DROP