51, have attempted 5 MS-150 tours in the last 6 years (no tour in 2005 thanks to Hurricane Katrina), finished 2 (done in by asthma & knee on previous rides). Am currently on the "injured reserve" list. My Doc and PT have allowed me to ride on paths but not on traffic, but with the heat index hitting 105-110F, the desire just isn't there. But I do ride my comfort bike around the neighborhood.