Prime Time Baseball

Project Fitness

ProsToYou Tennis

Protect & Defend Firearms Academy

RTR Pilates

Radiance Yoga

Reformation Fitness

Refresh Yoga Center

Rising Sol Yoga School

River's Edge Yoga

Riverside Gardens Swim and Tennis Club

Rock 'n' Roll Running Series USA

Rock Recovery

Rockville Ice Skating

Rumble Boxing

Rush Cycle

SEAL Team Physical Training

SPENGA - Ballston

STRNG Pain-Free Performance

Safety And Health Foundation

Sea Devil Swimming

Sergeant's Fitness Concepts

Sergeant’s Fitness Concepts

Sierra Club