I started having bladder pain in 2009. I use to run six days a week prior to my bladder sx. I have been able to walk on a treadmill but today I decided to run the last 1/4 mile. It felt great, but am I out of shape. I plan to run the last 1/4 of my walk for the next week and hopefully add a 1/4 mile to each week. I can't wait to run again!