Every year, in the mountains of Vermont, a group of ultra runners gather for a 550-mile race called Infinitus. It's one of the toughest trail running races in existence.

Jordan Wirfs-Brock was no stranger to ultra marathons, but Infinitus broke her: she failed to finish. Surprisingly, though, the failure turned out to be one of the best things that's ever happened to her.

This story first aired in 2016, and it won a gold medal for best independent podcast from Public Radio News Directors, Inc., or PRNDI.

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