And another one who has been doing it for the last 5 years ... which isn't particularly remarkable. What is remarkable is his age!!
94-year-old cyclist rides 100 miles on his birthday | Sports - KOAT Home
Here's another one who was/is riding centuries on his birthdays through his 70s, and he turned 80 in 2011.
http://www.richmond.com/news/article...4912d4c79.html