Offering support and networking for enthusiasts within the region since 1975. Features call signs, meeting calendar, repeaters and nets, membership details and contacts.

A non-profit recreational riding club focused on all facets of off-road riding sport. Features race and ride calendar, advocacy news and actions, family support and networking. An American Motorcyclist Association (AMA) chartered club.

Offers support, recreation and fun for members and guests including details on the social program, yachts, races, and facilities. Features a clubhouse at Calvert Marina in Dowell.

A nonprofit organization serving St. Mary's, Charles, and Calvert Counties that sponsors tennis programs for juniors and adults.

A non-profit organization that supports windsurfers through support, networking and training classes. Features overview of the group, available education courses, locations and contact details.