The Cocodona 250 is an ultramarathon put on annually by Aravaipa Running in Flagstaff, Arizona, since 2021. The race was started by Jamil Coury, a self-described "fourth generation Arizonan," and spans 256.5 miles with an estimated elevation gain of roughly 40,000 feet and elevation loss of 35,000 feet. The Cocodona 250 is typically held in the first week of May. The record time for the completion of the Cocodona 250 is held by Dan Green, who finished in 58 hours, 47 minutes, and 18 seconds in 2025. The recorder-holder for fastest time by a female is Rachel Entrekin, who finished in 63 hours, 50 minutes, and 55 seconds in 2025. The youngest person ever to finish the Cocodona 250 is 17-year-old Brady Chisholm from Salem, New Hampshire, who finished the 2024 Cocodona 250 on May 9, 2024, and the oldest is 73-year-old Michael Koppy from Duluth, Minnesota, who finished the 2024 Cocodona 250 on May 10, 2024. == Record holders == == References ==