Masters swimming is essentially swimming for adults over 18 years and encompasses casual fitness swimming to highly-organised competitive swimming.
How far you go with Masters swimming is up to you. The broad objectives are better health, getting fit, and friendship between swimmers.
If you want to race competitions are held regionally, nationally and internationally. This blog post offers good reasons to get involved in competitions, but there is no compulsion to compete.
If you do want to race competitively you’ll need to be an ASA member. Find out about ASA Membership here.