05/23/2012 02:46 pm ET

Micah True, Sometime-Boulder Resident And Avid Ultrarunner, Remembered By The New York Times

GILA HOT SPRINGS, N.M. — Micah True went off alone on a Tuesday morning to run through the rugged trails of the Gila Wilderness, and now it was already Saturday and he had not been seen again.

At age 58, he was a mythic figure, known by the nickname Caballo Blanco, or White Horse. He was a famous ultrarunner, competing in races two, three or four times as long as marathons. The day he vanished, he said he was going on a 12-mile jaunt, for him as routine as a lap around a high school track.

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