A participant in a grueling 250-mile (402-kilometer) ultramarathon on trails across northern Arizona died Tuesday after experiencing a medical emergency, race organizers and local law enforcement said.
First responders attended to a woman in her 40s who was participating in the race and collapsed at a trailhead in the Groom Creek community south of Prescott, Yavapai County Sheriff's Office spokesperson Paul Wick said on Wednesday.
