This chart shows the number of athletes participating in the 2024 Paris Olympics (y-axis) of each age (x-axis) at the time of the Paris 2024 Olympic opening ceremony.
The chart shows a histogram of a positively-skewed distribution, with a modal value of 24. Annotations on the graph point out interesting facts.
The youngest was Chinese skateboarder Zheng Haohao at 11 years and 11 months.
The oldest shown in this diagram is a little misleading. From what I can tell, he was a reserve member of the Australian Dressage team. The oldest athlete who actually competed was Spain's Juan Antonio Jimenez Cobo at 65. Also in dressage.
The oldest who didn't rely on a horse to do their work was Luxembourgish table tennis player Ni Xialian, at 61.
I thought MacDonald in the park skateboarding was fairly impressive for a 51-year old. Actually did completed runs and actual tricks, for a respectable final score of 77.66. Not on a gold medal level obviously, but if I can move like him at 51 I'll be happy.