I have had a bad foot for about 15 years and don't run at all and am limited in my walking.  For many years, I wore a heavy, expensive shoe with a great built-in orthotic and they helped.  But then I switched to these and they were an immediate help.  They more than doubled the amount I can walk per day without great pain.  And they are inexpensive.

The only problem -- you step in even a little water or mud, then your foot gets wet.  But that is a negligible price to pay to walk much further every day.  I find they do best when I wear them without socks.  Sometimes my feet get cold. That is much better than searing pain.