From age 25 onwards Wikipedia lists Masters world records. The oldest age-group is 100 – 104. NO, I just found somebody who holds the world record for the age-group in 50 backstroke for ages 105-109 and that is Jaring Timmerman of Canada. Apparently he also held the world record for the preceding age-group of 100-104.
Aged 100-104 Jaring swam the 50 backstroke in 1:45:59 and aged 105-109 Jaring took 3:09:55 for the same distance.
The women’s world record for age 90-94 in 50m Freestyle is 52:09, for 50 breaststroke for the same age-group its 1:14:04.
Just to update this post on 2. March 2018, the 50 m Freestyle record for 100 – 104 year olds has just been smashed by 99 year old George Corones in Queensland Australia with 56:12.
Ideally every athlete and swimmer should try to maintain their fitness and keep the age group records with rising age.
I would be pleased if I could even make it to the pool aged 100 let alone swim 50 meters. But this is what the sport and keeping fit is all about, perform as long as you can and stay fit, set a good example to others and don’t let yourself go.
For younger swimmers having the Olympic Games in their horizon, stay focussed on the long-term achievements and not only on performing till the Olympic games.