Maine Rock Gym
- Portable wall available for rent. Provides photos and information on clinics, groups and parties and rates.
- http://www.merockgym.com/

Portland Fencing Center
- Club contacts, logistics, and a coach biography featured.
- http://www.portlandfencingcenter.com/

Portland Velo Club
- Largest cycling club in the state. Promotes competitive and recreational cycling.
- http://www.portlandvelo.com/

Maine Island Kayak Company
- Offers a wide range of kayaking trips and instructional courses among remote and ocean islands.
- http://www.maineislandkayak.com/

Portland Rugby Football Club
- Fields two senior men's clubs and an old boys side in the New England Rugby Football Union and NorthEast Rugby Union Division II competitions. Provides roster, competition news, photographs, history, schedule, and contact information.
- http://www.portland.rugby.net/

Choi Institute of Martial Arts and Science
- Master Choi is the founder of choi shin do, a hybrid of tae kwon do, boxing, and grappling. Site offers biography, schedule, photographs, and address.
- http://www.choishindo.com/