Sorry to hear you are having injury problems- but be assured you are not alone!
It might sound bad, but I am relieved in a way that I am not the only one struggling. I hurt my hip the past few weeks, and although I am aiming to do 5 mins run, 1 walk, it may be less than that on the day.
Would love to be in the company of fellow 'hobblers' if you want to try to meet on the day. My husband and I are running for Cancer Research and Anthony Nolan, and we are on the blue line. Aiming to start with the penguin group.