You are not alone in this, Dianyla. Many of my pals also suffers from knee problems (as a result of over-use during childhood) but that doesnt prevent them from participating in races. There are team races (duathlons, triathlons) where each takes on a certain leg of the race. Look at it this way, isnt this a good chance for you to be really apt at a particular sport as compared to tri-athletes who have difficulties coping with 3 sports for the race ?![]()