The fifth edition of the Cocodona 250 rolled out of Black Canyon City at 5am local time on Monday, with a sold-out field of 404 entrants now strung along the early miles of the Black Canyon Trail and tasked with covering 253.3 miles north to Flagstaff before the 10am cutoff on Saturday. The 125-hour clock is the most generous of the major American 200-mile events, and Aravaipa Running has built the race around that arithmetic ever since the inaugural edition in 2021. The Mountain Outpost livestream went on air at 4.30am Pacific and will run in 16 staged broadcasts across the week, while live tracking through TrackLeaders has become the default second screen for anyone following the Arizona desert from afar.
The headline name on the entrant list is Courtney Dauwalter, who has not raced Cocodona since a 2022 attempt that ended at the Camp Verde checkpoint and who returns this year looking to add a four-figure desert finish to a back catalogue that already includes wins at Western States, UTMB and Hardrock. Dauwalter arrives off a 2026 season that opened with a Chianti Ultra Trail UTMB victory in March, and the long, low-altitude opening third of the Cocodona course should suit a runner who has built her career on holding form deep into 30-hour-plus efforts. Aravaipa officials confirmed her start at the pre-race briefing on Sunday evening, and her presence has tightened the women's race significantly.
The women's field is anchored by two-time defending champion and course-record holder Rachel Entrekin, who set the women's mark of 64 hours and 58 minutes in 2025 and arrives in Black Canyon City as the runner most other contenders are pacing themselves against. Behind Entrekin and Dauwalter, the deep names include returning podium runners and a steady stream of European entrants drawn by the UTMB World Series points on offer at the finish. The men's race opens with previous champions Michael Versteeg, Joe McConaughy and Michael McKnight all back on the start line, and 200-mile triple-crown winner Kilian Korth making his Cocodona debut after sweeping Tahoe 200, Bigfoot 200 and Moab 240 in a remarkable 2025 campaign.
The opening 37 miles to the Crown King aid station are the most punishing of the course, climbing roughly 7,500 feet through the Bradshaw Mountains on rocky, exposed two-track. Race director Jamil Coury has historically advised runners to bank conservative splits through this section, and the leaders this year are expected to come through Crown King between 11pm Monday and 4am Tuesday rather than push for an aggressive early pace. From there the route drops into Skull Valley before the long roll up through Sedona and Flagstaff, where altitude rather than terrain becomes the limiting factor. Crew access is restricted on the front half and opens up dramatically once runners cross into Yavapai County.
Weather at the start was cool and clear, with the National Weather Service forecasting daytime highs in the mid-80s along the lower-elevation sections through Tuesday before a cooling trend later in the week. Aravaipa has cut several aid stations in past editions due to wind or wildfire risk, but no advisories were in place at gun-time and the full 17-aid-station course is open as published. Live updates will run through the Mountain Outpost broadcast and the official Aravaipa Running channels until the final cutoff on Saturday morning, with pre-dawn finishes at the Flagstaff arch traditionally drawing the largest crowds of the week.