To date, there has been a very special group of individuals - marathon swimmers over the age of 50 years - who have successfully swum a marathon swim in Lake Ontario, Canada: members of the Lake Ontario Half Century Club. The members of this exclusive club are listed below.

If you know of any individuals who are not listed and who are eligible to join the Half Century Club in any open body of water, please send information on the swimmer's name, country, official time, date and location to Open Water Source via email ( For additional information on marathon swimming records, visit the International Marathon Swimming Hall of Fame website.

Half Century Club - Lake Ontario