[2] The rules and distances are nearly the same as for senior swimming, but "breaststroke kicking movement is permitted for butterfly",[3] and meet programs include mixed relay events (2 men / 2 women).
[4] In 2014 Jaring Timmermann from Canada, at the age of 105, set a world record as the oldest, but he died the same year.
Masters swimming is a fast-growing leisure activity, particularly in North America and Australia but also in Europe.
The minimum requirements to join a masters club vary widely, anywhere from the ability to swim one length of the pool to the ability to swim a kilometre without stopping.
In addition, it sponsors programs for non-competitive "fitness" swimmers who train primarily for the health benefits that the activity offers to the aging athlete.