walking...now there's a thought. Do you feel your knee at all walking?
nope, completely pain-free. i can get a good walk going at about 16 min/mile. that right there is a 7 hour marathon.
I walked a marathon at the Howl 8-hour last year while recovering from the MTB wreck. It was
theraputic.
hm. guess i need to find another marathon to comply with your prescription!