Takes about that long for us 'normaltons' to get to that level anyway haha! Hell by the time I have enough cash put away for a really, REALLY nice young horse and the training to get to GP, I'll be pushing 80.
I'll settle with my lovely little youngster, decent coach and a career that I love for now ;)
He has ridden in several Olympics, and is a neat guy. However, the oldest (dressage) rider was Lorna Johnstone (british) in the 76 munich games. She rode a very difficult stallion and still finished in the top 12!!!! The oldest even rider was from Australia.