A runner has died after suffering a serious medical emergency during the Cocodona 250 ultramarathon across the Arizona desert, race organizers confirmed. The point-to-point, multi-day event began on Monday, May 4, in Black Canyon City and sends runners north to Flagstaff. Despite the tragedy, race staff said the competition will continue in the runner’s honor. Crews and family members were notified, and organizers have asked for privacy as they support those directly affected.
In a social media post, the Cocodona team wrote, “We are deeply saddened to share that a participant experienced a serious medical emergency today during the event and has passed away,” noting that the runner’s crew and family had already been informed. Organizers also asked for the community’s thoughts for the family, according to iRunFar.
About the course
The Cocodona 250 is a roughly 252.9-mile, point-to-point ultramarathon that links Black Canyon City and Flagstaff and features more than 38,000 feet of climbing and a 125-hour cutoff. The route includes long stretches of single-track and high mountain sections that climb above 9,200 feet, making it one of the most demanding trail races in the United States, according to Aravaipa Running.
Field and leaders
This year’s 250-mile edition drew roughly 400 starters, including multiple past champions and a stacked elite field, according to Run247. Two-time champion Rachel Entrekin had built a commanding lead deep into the race and was on pace to challenge the course record, as reported by Marathon Handbook.
Race will continue
Organizers said the competition would continue “in their honor” and urged runners, crews, and volunteers to carry the participant’s memory with them as they pressed on toward Flagstaff. The race team said it is supporting those directly involved and will withhold further personal details for now, per iRunFar.
What we know and what remains unknown
Organizers have not released the runner’s name or a cause of death and have asked for privacy while family and crews are notified and supported. Local authorities and race medical staff have not issued a public report about the cause. Organizers have said they will share more information when appropriate, according to Run247.
