Dealing with Bone Spurs

Options
New to the group. I've recently stopped exercising because of pain in my feet and other joints. I've had bone spurs removed from my right shoulder and also have a few in my right foot that causes pain when I try to run. The problem is that I'm running a half marathon in two weeks and have not been able to train due to the pain. I'm probably going to be walking most of the half marathon. Has anyone in the group had to deal with bone spurs?