The tentative calendar of 2025 marathon swim dates is below. We opened the application from January 1-14, 2025, in order to make assignments by the end of January. Dates listed are starting dates; in the case of night swims and longer events, the finish may be the following day.
20 Bridges
Applications for 20 Bridges were accepted for the following tidal widows.
Window 1: Friday, June 20-Sunday, June 29 (including some night swims)
Window 2: Friday, July 11-Saturday, July 12 (night swims)
Window 3: Tuesday, July 15-Sunday, July 27 (including some night swims)
Window 4: Saturday, August 9-Sunday, August 17
Window 5: Saturday, August 23-Sunday, August 25
Window 6: Sunday, September 7-Sunday, September 14
Window 7: Saturday, September 20-Sunday, September 21
Window 8: Tuesday, October 7-Friday, October 10
40 Bridges
Saturday, June 28 (start date)
8 Bridges
Not running due to a lack of qualified applicants.
Ederle-Burke Swim
Saturday, September 6