Seventy one and still working but this is my last year for sure. Right now I'm training for a long tour, hopefully from Seattle to Miami. Also, I have thoughts of going carless and living the life of a vagabond bicyclist. In ten years I'll probably be nearing the end of my ability to do this but I'll keep push'n on if able. In 20 years I'd be 91. How many 91 year old bicyclists do you know? In 30 years? I'm afraid the hole will be dug and filled in by then!