Recycle: There are a number of charities that send your used sneakers to impoverished places with little access to athletic shoes.
Shoe4Africa collects running shoes, cleans them up and ships them to East Africa to encourage sport. The first pair of Shoe4Africa shoes to be donated back in 1995 went to Mark Wendot Yatich, then an unknown runner—he went on to win the Los Angeles Marathon. Another runner to get shoes that year was Japheth Kimutai, who three years later won the Commonwealth Games 800m gold medal.