My sister had uncontrolled anxiety and spent hours every day at the gym.

She refused to listen to me or my mother to have a doctor look into it, believing instead that the gym and natural remedies would take care of it.

She didn't live long enough to take care of it - died of cancer a couple of years ago.

My point is similar to another poster here. Maybe you're trying to cope with your anxiety by running.

Maybe the root of the problem needs to be taken care of?