Hi. We have a couple of 80 and 90 year olds in Virginia. Sadly we just lost one of them (at 101).
I do want to give a thumbs up to Shirley Loftus Charley. 65, she did all the 200's and 1000 on a Saturday, the 1650, 400 IM, and 500 on Sunday morning. Took down a couple of national records, state records, took the high point award and the 200 fastest times and distance fastest times awards. I'd say there is never such a thing as too old.