Trail Running · Arizona

🇺🇸Cocodona 250:
Course Analysis & Race Readiness

402km with 11,596m of climbing across 36 climbs and 27 descents. A relentless test where durability dominates: the ability to keep moving over days, not the intensity of any single effort, decides the outcome.

CourseRecon scores your own training against the durability and descending demands that define Cocodona 250 — the sample analysis below shows exactly how.

402 km

Distance

+10,850 m

Vertical Gain

−9,350 m

Total Descent

May 2, 2027

Next Edition · 284 days out

Check YOUR readiness

Connect Strava · No card · 2 min

The Course · GPS-Measured

What 407 km / 253 mi and 10,850 m / 35,600 ft of vertical gain actually look like

Measured from the GPS track: 407 km / 253 mi and 10,850 m / 35,600 ft of vertical gain. This is the terrain you're signing up for: read it before it reads you.

Course Profile

Terrain summary

Claimed vs GPS-Measured

Claimed · Organizer

402km

Distance

+12,500m

Gain

+5.4 km−1,650 m

GPS-Measured

407km

Distance

+10,850m

Gain

Climb & Gradient

+10,850 mTotal Gain

−9,350 mTotal Loss

Gradient Distribution

54%

Flat

≤3% grade

21%

Run-Climb

3–15% up

Steep Climb

>15% up

21%

Descent

downhill

Steepest Sustained Sections

Descent

KM 394.0–398.0 · −709 m

-16.2%

Descent

KM 175.0–178.0 · −438 m

-14.9%

Descent

KM 37.2–39.6 · −247 m

-10.2%

Climb

KM 44.4–50.7 · +538 m

+8.5%

Finish & Cutoff Times

What it takes to finish

Reference finish times from past results — use them to set a realistic goal pace.

56h 10m

Winning time

61h 35m

Top 5

125h 00m

Back of pack

What This Race Demands

Four things this course asks of your body

Every course weights the four pillars of mountain-ultra fitness differently. Durability carries 63% of the scoring weight on this course — the terrain makes that the deciding factor.

Weighting shows where readiness is won or lost at this distance — not whether you need each pillar. An aerobic base is a given for a race this long, so it carries little deciding weight even though it's essential — the gaps open on the climbs, descents and the back half.

AerobicSustained engine

Foundational

Sustained steady-state effort over 402km, with 41% flat terrain rewarding efficient cruising.

ClimbingVertical power

17%

36 climbs totaling 11,596m, including an 823m gain and an 18.6km sustained ascent.

DescendingEccentric / braking

20%

27 descents dropping 10,098m, with pitches as steep as -16.2% late in the race.

DurabilityLate-race resilience

63%

Multi-day continuous effort from 607m to 2,775m; the dominant demand by a wide margin.

The Profile in One Line

A 402km ultra-distance grind where sustained durability, not peak power, defines every kilometer.

Aerobic FoundationalClimbing 17%Descending 20%Durability 63%

Here's how CourseRecon reads a course and an athlete

Sample Readiness Analysis

What a readiness result looks like for this course

This is a worked example for a representative strong mountain-ultra athlete — not your score. Connect your own training and the same analysis runs on you.

Sample

OUT OF 100

MOSTLY READY

For a representative strong mountain-ultra athlete

This is a sample — connect your Strava to see your own result.

Pillar Breakdown

Aerobic

With 41% of the course flat and 20% at runnable 3–10% grades, efficient aerobic cruising conserves energy across the full 402km.

Climbing

36 climbs stacking 11,596m of gain demand repeatable uphill work, including a single 823m climb and an 18.6km sustained ascent; 12% of terrain exceeds 10% grade.

Descending

27 descents shedding 10,098m tax the legs, with steep pitches reaching -16.2% and a single 709m drop punishing quads late in the course.

Durability

The defining demand: 402km with 11,596m of gain over days of continuous movement, spanning 607m to 2,775m elevation, requires resilience to accumulated fatigue above all else.

km 44–51

Early 538m Climb

A 6.4km, 538m ascent at 8.5% early in the race sets the tone, demanding disciplined pacing before fatigue accumulates.

km 175–178

Mid-Race Steep Drop

A 438m descent at -14.9% over just 2.9km hammers already-fatigued quads deep into the effort.

km 394–398

Final Plunge

The steepest section, a 709m descent at -16.2%, arrives near the finish when legs are most compromised, testing descending under maximum durability strain.

That was a sample