Originally Posted by
Jtmav
Have really fallen in love with the sport and still compete with myself as far as times go.
I ran for many years up into my late 50's with a similar result, knees and back trouble to this day, now 70. I would strongly recommend a professional fit and go so far as to say some shops do a sorta get you going fit and some will better help your particular physical condition and age so asking around might be worth your while.