@Mustang67 

You're free to set you own goal and you can walk, run or ride.  I'm doing the default ***km.  September is Prostate Awareness month so it's to raise awareness and funds for prostate cancer research. So the Long Run lasts the whole month and you just add up the km's you do and try to reach your goal by then end of the month.  I started a bit late so I've only done the past 2 days and done just over *kms so far.

I cant walk very far either because of either back pain or the low blood pressure makes me very light headed and dizzy while standing, so I'm doing it on an exercise bike.  It just means I can do it for longer because I'm not standing while doing it.

I would give a link out for the fundraiser, but i'm not sure what the rules are here about that.

Well done for doing your own walks to raise funds.  It all goes to great causes so it's good to help raise some money for them.  Hopefully you'll be back up and walking in October.  Are you having something done to relieve it, or just waiting for time to heal?