Peter Welch's Gym

Pilates Back Bay

Power Rowing

PowerLift Studio

Powerhouse Personal Training

Powers Aquatics, LLC

Private jewels fitness

Pro Ambitions Hockey, Inc.

Project DEEP

Pups and Yoga

Pure Barre

Pure Barre Boston & Harvard Square

Q BALLROOM

Qi Studio

Quincy Yoga & Massage

R Barn

R3BILT

RPM Fitness

Radiant Yoga Boston

Rafael Rivera Wellness/Rock Steady Boxing

RayFit

Rebel Athletic Club

Redefine Strength and Fitness

Redemption Strength & Conditioning