04/11/2026
Swap Out Your Shoes When Necessary
Running shoes break down after logging a lot of miles. "Glue has a tendency to break down under ultraviolet [UV] light, as do the other materials that make up the shoe," said Kastor.
Recycle your shoes, even if your sneakers have only 150 miles on them but are more than two years old. Chances are they have already started deteriorating.