The 1-Mile Chesapeake Bay Challenge Swim started in 1998 and consists of a triangular-shaped course starting and ending at the small sandy beach adjacent to the Bay Bridge Marina on the eastern shore immediately south of the Bay Bridges.  The event is coincidental with the 4.4-Mile Great Chesapeake Bay Swim (GCBS); the two events start approximately the same time at the different ends of the Bay Bridges.  The 1-Mile Challenge is completed before the first GCBS finisher crosses the Bay.

Official results of the 2016 Chesapeake Challenge

More information is available at Bayswim.com and Lin-Mark Computer Sports (links above). Sorry, this page has not been updated in a while, and Lin-Mark has removed many past results from their web site.