This post has been updated.
Kids worldwide — and a few celebrities — helped set a world record on Tuesday, donating more than 16,000 used running shoes destined to become surfaces for playgrounds and athletic fields.
Used running shoes filled the long driveway of the National Geographic Society in downtown Washington as a Guinness World Records representative certified the new mark — 16,407 shoes laid heel-to-toe.
The count by Guinness’s Mike Janela completed a program that included celebrity donations from Taylor Swift, One Direction, Danica Patrick, Amanda Beard and Eli Manning.
“It took me three-and-a-half hours to count them,’’ said Janela, wearing a crisp navy blazer in the Washington morning chill.
National Geographic said the shoes, if they were laid together as a chain, would stretch more than two miles.
Nike’s Reuse-a-Shoe program mashes up the sneakers into material that helps create surfaces for soccer fields, playgrounds and basketball and tennis courts, said Rachel Buchholz, managing editor of National Geographic Kids.