They weren't stealing. They were Goodwill of Central Arizona employees and volunteers, and they were collecting the clothes to sell at the organization's retail stores.
The Goodwill folks will be back on Sunday to collect clothing from this year's full and half marathons.
Goodwill spokeswoman Katrina Thurman, a participant in the pickup, said the organization collected two trucks full of clothing last year, including jackets, hats, sweatshirts, running pants and gloves. They brought in $47,000 for Goodwill.
"It's amazing how much stuff is discarded," Thurman said. "It produces some good postrace revenue."