Virtual tour
The member experience
Our carefully crafted member experience levels help us achieve our mission of making member stronger in 30 minutes, physically and mentally.
The trainer-led experience
Get guidance and motivation from a Champion Trainer throughout your entire workout. During the TLE, you’ll have dedicated time with a trainer performing traditional kickboxing and boxing combos.
The Personal Training Experience
Get fully customized, one-on-one coaching with one of our 9Round Certified Trainers. With a PT package, each of your workouts will be tailored to your individual fitness level and goals.
The virtual experience
Work out anytime, anywhere with the 9RoundNOW mobile app. Our extensive collection of guided video workouts harnesses the power of kickboxing fitness to help you crush your goals. No equipment required.
About the studio
9Round Fitness - Brookline, MA - Harvard St
471 Harvard St
Brookline, Massachusetts 02446
What you get at 9Round
Semi-private
instruction
Kickboxing
fitness
Circuit Training —
No class times
Workouts change
every day
Heart rate
training
Nutrition
support
Our Trainers
Isabella
Zensen
WILDCHILD
9Round Certified Trainer
Studio Manager
9Round Trainer Since 2023
Favorite Part of Training WildChild is dedicated to empowering others on their fitness journey. Unleash your best and join WildChild at 9Round Brookline for a killer workout!
Devon
Hughes
MOTIVATOR
9Round Certified Trainer
Kickboxology Certified
Certified Personal Trainer (CPT)
Lead Trainer
9Round Trainer Since 2023
Favorite Part of Training My favorite part of being a 9Round trainer is helping and motivating people to be their best selves on a daily basis.
Available for
Personal Training
Sessions
Kyle
Martin
TRASHMAN
9Round Certified Trainer
Trainer
9Round Trainer Since 2023
Favorite Part of Training I love building relationships with our members and working alongside them as they consistently smash their fitness goals!
Elena
Jordan
EJ
9Round Certified Trainer
Trainer
9Round Trainer Since 2024
Favorite Part of Training My favorite part of training is teaching new techniques and getting a killer workout with the members!
Jen
Miller
FLYIN HAWAIIAN
9Round Certified Trainer
Black Belt in Martial Arts
Trainer
9Round Trainer Since 2025
Favorite Part of Training I have always enjoyed coaching people and love helping them reach their goals, pushing them further than they thought possible!