I have the same issue and don't do well with running for very long. For a while I didn't even do well with standing for very long. It wasn't until my ortho referred me to a physical therapist that anyone ever told me why or what to do about it. It took the PT all of 60 seconds to notice that my arches were collapsing causing my entire leg to be misaligned and my patella to "run off track". After having Rx orthotic arch supports my knees have very little pain now (although they do still snap and crackle due to the previous damage done). I still can't run marathons but I can run a few miles at a stretch.
If they don't give you answers about what to do about it try a PT- they tend to be very practical and have a lot of good information.
Be careful about reading health books. You may die of a misprint.- Mark Twain
| Pounds lost: 32.0