Events/Cocodona 250

Cocodona 250

Running

Date

Mon, 3 May 2027

Venue

Black Canyon City → Flagstaff, Arizona

Countdown

May

Distance

400km

Total climb

12,000m

The clock never stops. 250 miles from the Sonoran desert up to Flagstaff, Arizona, run continuously over three to five days on your feet. No nightly restart, no staging.

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The course

The route

Point to point from Black Canyon City to Flagstaff: mostly rocky desert and high-country singletrack, linked by runnable jeep road and washes, with steep sky-island climbs between. A field of around 191 started in 2025.

Weather

Early-May, Black Canyon City → Flagstaff

29°CTypical high

12°CTypical low

1°CColdest in 20 years

7%Days with rain

Highs around 29°C and lows around 12°C, but it has dropped to 1°C. Rain on 7% of days.

NASA POWER data, 2006-2025, the week either side of race day

2025 results

Who finishes, and how

#RiderTimeGap

01Rachel Entrekin63:50:55

02Lindsey Dwyer79:35:28

03Sarah Ostaszewski80:25:31

Women finishers

4d 18:22:06

Median time

Women · 2025 results, as published by the organiser.

How fast could you finish?

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Training

Training for the Cocodona 250

We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.

Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.

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What the course throws at you

Typical sessions

Around 40,000ft of climbing and just as much descent over rocky, technical trail

Heat to manage early in the low desert, then cold and altitude in the high country

Days and nights of accumulating fatigue, not a single hard effort

Sustained fuelling of 200 to 300+ kcal per hour, through nausea and flavour fatigue

What your weeks look like

Typical sessions

Back-to-back-to-back long runs, three big days like 6h, 5h then 4h, the core multi-day stimulus

An overnight run into the next day with a planned nap, rehearsing sleep deprivation

Desert heat prep, sauna sessions and overdressed midday runs, kept late in the build

Downhill repeats and pole-hike climbs to condition your legs for the relentless vert

Not a generic schedule

Typical sessions

Built from your current fitness and the time you actually have

Adapts every week as Beina learns how you respond

Syncs your sessions straight to Garmin and Wahoo

One clear next session, never a wall of spreadsheet

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