Runner has fatal medical emergency during grueling 250-mile Cocodona ultramarathon in Arizona

The Cocodona is one of the toughest ultramarathons in the US, featuring a course that rises more than a mile in elevation — twice — across Arizona.

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May 7, 2026 - 04:49
Runner has fatal medical emergency during grueling 250-mile Cocodona ultramarathon in Arizona
The Cocodona is one of the toughest ultramarathons in the US, featuring a course that rises more than a mile in elevation — twice — across Arizona.
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