Trail Running · Arizona

🇺🇸Javelina Jundred:
Course Analysis & Race Readiness

161 km over gentle desert terrain with just 1,575 m of gain. Nearly half the course is flat, and no climb tops 190 m. The distance itself, not the grade, is the challenge.

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

161 km

Distance

+1,520 m

Vertical Gain

−1,530 m

Total Descent

Oct 31, 2026

Next Edition · 101 days out

Check YOUR readiness

Connect Strava · No card · 2 min

The Course · GPS-Measured

What 161 km / 99.8 mi and 1,520 m / 5,000 ft of vertical gain actually look like

Measured from the GPS track: 161 km / 99.8 mi and 1,520 m / 5,000 ft of vertical gain. This is the terrain you're signing up for: read it before it reads you.

Course Profile

Segments

Daylight

Terrain summary

Claimed vs GPS-Measured

Claimed · Organizer

161km

Distance

+1,580m

Gain

−0.3 km−60 m

GPS-Measured

161km

Distance

+1,520m

Gain

Climb & Gradient

+1,520 mTotal Gain

−1,530 mTotal Loss

Gradient Distribution

81%

Flat

≤3% grade

10%

Run-Climb

3–15% up

Steep Climb

>15% up

Descent

downhill

Steepest Sustained Sections

Descent

KM 52.5–60.9 · −189 m

-2.3%

Climb

KM 73.2–81.6 · +190 m

+2.3%

Descent

KM 115.0–123.0 · −189 m

-2.3%

Climb

KM 136.0–144.0 · +190 m

+2.3%

Finish & Cutoff Times

What it takes to finish

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

12h 10m

Winning time

13h 10m

Top 5

23h 32m

Median finisher

30h 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 65% 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 flat-to-rolling running over 161 km with 49% of the course flat.

ClimbingVertical power

14%

Modest, gradual grades; ten climbs, biggest gaining only 190 m at 2.3%.

DescendingEccentric / braking

21%

Extended shallow descents, longest running 12.1 km, biggest losing 241 m.

DurabilityLate-race resilience

65%

Holding running form across 161 km of repetitive, low-relief terrain.

The Profile in One Line

A flat, rolling 161 km ultra where relentless mileage outweighs any single climb or descent.

Aerobic FoundationalClimbing 14%Descending 21%Durability 65%

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

READY

For a representative strong mountain-ultra athlete

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

Pillar Breakdown

Aerobic

With half the course flat and gentle grades throughout, this rewards steady aerobic output that never gets a break from forward motion. Fitness must support continuous running rather than power surges.

Climbing

100

Ten climbs but none demanding; the biggest gains 190 m over 8.7 km at just 2.3%. Ascents are runnable, so climbing here means sustaining pace uphill, not grinding steep pitches.

Descending

Five descents dominated by gentle grades, the longest 12.1 km and the biggest losing 241 m. Shallow, extended downhills invite fast running that quietly loads the legs.

Durability

The decisive pillar at 65% weight: 161 km of low-relief terrain gives few excuses to walk, so the legs must absorb continuous impact for the full distance.

km 73–82

The Biggest Climb

An 8.7 km rise gaining 190 m at 2.3% is the largest ascent on course, but its gentle grade means the test is choosing to keep running rather than hike.

km 115–123

Long Runnable Descent

A shallow descent losing 189 m at -2.3% tempts fast running deep into the race, where accumulated fatigue makes downhill impact costly.

Overall

Relentless Flat Mileage

With 49% flat and no major climbs, the course offers no terrain-forced recovery, so durability across the full 161 km decides the day.

That was a sample