WaterSportDirectory.com - A guide and resources web directory that offers all things water sport about such as swimming, diving, kitesurfing, sport fishing, underwater, water polo, windsurfing, water skiing & wakeboarding.
Great Chesapeake Bay Swim
.4 Mile swim near Annapolis is considered one of the most sought after open water swims in the U.S. Proceeds benefit the March of Dimes.
http://www.bayswim.com/
Google PR:
Pacific Ocean Swims
Organises and promotes ocean swims in the Pacific region. Information on ocean swimming events worldwide.
http://www.pacificswims.com/
Google PR:
Swimming Community
Offers several on-line competitions where competitors compete from their home pools and track results via the web. Includes on-line training logs.