I had plantar fasciitis after running my first race in over a year during an April meet. It went away within a week. After running in racing flats all the time, I switched back to trainers and got it in May again. This time it lasted from May until September in which I stretched, did the golf ball. Finally, I decided to order the strassburg sock and within 1 week of wearing it, the pain wasn't gone, but I was able to run 3 miles. Before, if I tried to run 1 mile, my feet hurt for the next 2 weeks a lot more than usual. I wore it every night for 2 months and now wear it occasionally if I feel anything, which is very very uncommon. I've increased mileage slowly and now average about 6 miles a day after starting back up in late sept/early oct.