Rock Creek Sports Club 8325 Grubb Rd, Silver Spring, MD20910 At Rock Creek Sports Club, the mission is to help members achieve their personal fitness goals. It provides…More first-class service and facilities, so that achieving those goals is enjoyable. Rock Creek considers itself a true neighborhood gym, being independently owned and not a chain, located at the junction of Silver Spring, Chevy Chase and Northwest Washington, DC. In 2010, Rock Creek was a top vote getter in the Bethesda Magazine for best places to work out in Bethesda/Silver Spring/Chevy Chase and Kensington. The gym also offers classes for all ages and ability levels.