C2 Fitness Center

CCI Health Services

CD Fit

COR FIT

CYCLED! Takoma Park

Capital Aikikai

Capital City Sports Academy

Capital Pilates Studio

Capital Rowing Club

Capital Sprints

Capital Wellness

Capoeira DC

Capstone Performance Training

Capstone Soccer

Catholic University Women's Lacrosse

Center for Integrative Medicine

CenterPointe

Chevy Chase Athletic Club

Chevy Chase Ballroom

Clarendon Personal Training

Cloverly PTA

Club Pilates

Coach Debbee

Coach Nix Fit