Question: What is the given name of the American ultrarunner from Boulder, Colorado who started the Ultra Caballo Blanco?
Sentence (from "Ultramaraton Caballo Blanco"): Started by Micah True (The legendary Caballo Blanco), the Ultra Caballo Blanco (also known as Copper Canyon Ultramarathon or CCUM) is now produced by Fuego y Agua Events LLC.
Relevant evidence: Yes