When to lose your shoes
Since the Philadelphia Marathon Runners’ Blog launched a month ago, we’ve been receiving questions from readers on topics ranging from training courses to how to cool down after a long race. One interesting topic that recently hit our inbox was a question about the timing of purchasing new running shoes.
Dear Kristen,
I heard that you should replace your shoes every few months of heavy training. I’ve been using the same shoes for some time now and noticed that my toenail is turning black. Could it be my shoes?
- Maggie, Philadelphia

Shoe experts suggest you replace your running shoes 250-500 miles depending on your weight. A runner who weighs 220 lbs. may have to replace their shoes every 350 miles while someone who may be 160 lbs. can get away with running in the same shoes for 450 miles.
Injuries such as black toenails or shin splints are generally tell-tale signs that a runner’s shoes aren’t fitting properly or needs to be replaced. Checking the cushioning of your shoes for excessive wear is typically better to examine rather than your soles. Soles tend to outlast the padding in your shoes.
To be sure, bringing your shoes to a knowledgeable running shoe expert is best to diagnose a need for new shoes, but I’ve been told a good rule of thumb is every six months with regular use. And, of course, exercise good judgment. If your legs or feet hurt while running and your shoes aren’t new, there is a good chance it’s time to lose the shoes!*
*If it is time for a new pair of running shoes, be sure to save your old kicks for Perpetual Prosperity Pumps Foundation shoe drops at the 2009 Philadelphia Marathon Health & Fitness Expo!

