Video of the 2015 24 Hour Swim Relay courtesy of Lisa Amorao, Cathy Harrington, Laura Leahy, Anne Whalen McLindon, Melissa King, and Suzie Dods from Aquatic Park in San Francisco Bay.

We have 80 swimmers this year who will swim from 9 am on Saturday to 9 am on Sunday,” explained Suzie Dods who created the 24 Hour Swim Relay in San Francisco’s Aquatic Park.

The 24 Hour Swim is a relay that started in 2014 and was inspired by the 24 Heures La Tuque 2-person relay sanctioned by the World Professional Marathon Swimming Federation in the 1970s.

This year’s edition is the largest assembly of 24’ers since 2014.

Copyright © 2016 by World Open Water Swimming Association