Action Athletics: Boston's Premiere Obstacle Training Gym
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Coaches are on the floor to support ninjas while they explore obstacles and level up their skills!
Open Gyms are perfect for all levels

$30 per open gym /  $250 for a 10 pack
packs can be used to register in all LOCATIONS
(single visits passes are for the specific location (contact us if you would like to switch your pass))


​SNEAKERS and WAIVERS are required to participate!
It is not safe to participate in flip-flops , barefeet or boots.

PRE-REGISTRATION IS REQUIRED​

CLICK ON THE LOCATION BELOW TO REGISTER!

BOSTON
MONDAY/THURSDAY
 Kids Open Gym
4-6pm (ages 4+)
​

SATURDAYS & SUNDAYS

 Kids Open Gym
10:00am-12:00pm
(Ages 4+)
NORWOOD
SATURDAYS & SUNDAYS
 Kids Open Gym
10:00am - 12:00pm
​(Ages 3+)
WELLESLEY
MONDAY/TUESDAY/THURSDAY
 Kids Open Gym
4:30-6pm (ages 5+)
​
SATURDAYS & SUNDAYS
Family Open Gym*
​
10:00 - 12:00  (ages 3+)




*Family Open Gym is recommended for ages 3-8, but all ages are welcome! 
Any little ninjas must have a parent/guardian with them to help with obstacles and to help ensure their safety.
Advanced, teen, and adult ninjas are allowed to participate, but please be respectful of all other participants!

CANCELLATION POLICY
If you cannot make it to Open Gym, please email us at [email protected] to cancel your reservation so that we may open up the spot. 
If you email your cancellation prior to the day of your reservation,  your pass will be returned as an account credit.
If you cancel day-of or do not show up, you will be charged for the visit. 
No refunds will be issued.


ADDTIONAL INFORMATION

>> Coaches are on the floor during open gyms to provide assistance and to ensure safety.  Open Gyms start with rules and general safety so all participants know how to approach our obstacles safely.

>>We understand that little bodies and big bodies move very differently.  Certain areas of the gym are set up with level/age appropriate obstacles so that everyone can train safely.

>> You can arrive anytime during the Open Gym.  If you arrive early, you will not be allowed on the obstacle floor until the open gym starts.  If you arrive late, you will still have to leave at the end of  the open gym. 

>>Pre-registration, with a valid pass or payment, is required for all open gyms.  For a discount, purchase an Open Gym 10 Pack! 

>> 10 packs can be used across ALL locations!

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
  • ACTION Summer 2025
    • BOSTON Summer Program
    • NORWOOD Summer Program
    • WELLESLEY Summer Program
  • KIDS
    • Ninja Kids Class Comps
    • 2025-2026 CLASSES
    • OPEN GYMS >
      • BOSTON OPEN GYMS
      • NORWOOD OPEN GYMS
      • WELLESLEY OPEN GYMS
  • ADULTS
  • PARTIES
    • PARTIES & EVENTS - SUMMER
  • FITNESS TRAINING
    • PERSONAL FITNESS TRAINING
    • PRIVATE OBSTACLE TRAINING
  • CAREERS
  • Contact Us
  • Boston Home
  • Norwood Home
  • Wellesley Home