2016 Boston Light Swim ~ August 20, 2016 at 8:00AM

Watch this space for updated information about the 2016 Boston Light Swim.

Registration opens at 1pm on March 10, 2016.

We will be using a lottery registration system again this year and you’ll have until 1pm on March 14, 2016 to submit your registration. The random drawing for event participants will take place on March 15, 2016.

A Boston Tradition Since 1907

The oldest open water marathon swim in the U.S. and affectionately billed as the “Granddaddy of American Open Water Swims,” the 8-mile Boston Light Swim has been a local tradition since 1907. Participants begin the race in the water at America’s first lighthouse, the Boston Light on Little Brewster Island in the outer Harbor. The course continues past George’s Island and Rainsford Island, then along Long Island (and past where the Long Island Bridge used to stand), and around Thompson’s Island. Swimmers come ashore at the historic L Street Bathhouse in South Boston, home of the world famous L Street Brownies and the L Street Ice Swimmers.

This swim is perfect for seasoned cold water ocean swimmers and those who are working up to longer cold water swims. Many swimmers in the past have used this 8-mile, non-wetsuit swim to prepare for an English Channel crossing.

Come join us for a fun, fast marathon race in unpredictable, challenging, and totally fun conditions.

John DaPrato from New York got inked after finishing the 2010 Boston Light Swim!


This is a United States Coast Guard and Massachusetts Open Water Swimming Association permitted event.


Thank you to our 2015 Event Sponsors!





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Thank you to last year’s sponsors: Boston Harbor Yacht Club, Hammer Nutrition, Harpoon Brewery, FINIS and the Curley Community Center. See our blog for more information about our sponsors. If you’d like to sponsor the Boston Light Swim, please contact Race Co-Directors Greg O’Connor and Elaine Howley. (goconnor AT massopenwaterswimming DOT org) (ehowley AT massopenwaterswimming DOT org)


Future Boston Light Swim Dates:

All swims are on a Saturday.

2016: August 20th @ 8:00 am

2017: August 5th @ 6:00 am

2018: August 11th @ 7:30 am

2019: August 17th @ 7:30 am

2020: August 22th @ 8:00 am