Trail Running · Fiordland

🇳🇿Kepler Challenge:
Course Analysis & Race Readiness

A 60km course with 1949m of gain front-loaded into one 12.1km climb, then paid back over six descents totaling 1941m of loss. Nearly half the route is flat, rewarding relentless rhythm.

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

60.0 km

Distance

+1,950 m

Vertical Gain

−1,940 m

Total Descent

Dec 5, 2026

Next Edition · 136 days out

Check YOUR readiness

Connect Strava · No card · 2 min

The Course · GPS-Measured

What 59.4 km / 36.9 mi and 1,950 m / 6,390 ft of vertical gain actually look like

Measured from the GPS track: 59.4 km / 36.9 mi and 1,950 m / 6,390 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

60.0km

Distance

+2,200m

Gain

−0.6 km−250 m

GPS-Measured

59.4km

Distance

+1,950m

Gain

Climb & Gradient

+1,950 mTotal Gain

−1,940 mTotal Loss

Gradient Distribution

46%

Flat

≤3% grade

23%

Run-Climb

3–15% up

Steep Climb

>15% up

26%

Descent

downhill

Steepest Sustained Sections

Descent

KM 22.0–27.8 · −890 m

-15.2%

ClimbCRUX

KM 5.1–17.2 · +1,189 m

+9.8%

Climb

KM 18.8–20.8 · +177 m

+8.7%

Descent

KM 28.7–36.5 · −211 m

-2.7%

Finish & Cutoff Times

What it takes to finish

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

5h 21m

Winning time

6h 10m

Top 5

6h 48m

Top 10

8h 33m

Median finisher

11h 02m

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. Descending carries 41% 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 effort across 60km with 46% flat running that never lets you coast.

ClimbingVertical power

19%

One dominant 12.1km, 1189m ascent at 9.8% defines the day's uphill work.

DescendingEccentric / braking

41%

Six descents shedding 1941m, including a steep 890m drop over 5.9km at -15.2%.

DurabilityLate-race resilience

40%

Legs must absorb heavy descending and hold form over the full 60km distance.

The Profile in One Line

One big early climb, a punishing 890m plunge, then long undulating terrain that grinds legs to the finish.

Aerobic FoundationalClimbing 19%Descending 41%Durability 40%

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 46% of the course flat and a total distance of 60km, steady aerobic output is constant, though it is not the decisive limiter here.

Climbing

The single major climb spans 12.1km and gains 1189m at 9.8%, demanding efficient, patient uphill pacing early in the race.

Descending

Descending is the largest demand: 1941m of loss across six descents, headlined by an 890m drop at -15.2%, requires eccentric strength and control.

Durability

After the big climb and steep descent, the course keeps undulating for tens of kilometers, so muscular resilience over the full 60km is decisive.

KM 5–17

The Long Ascent

A 12.1km climb gaining 1189m at 9.8% is the day's defining uphill, banking most of the total gain in one continuous effort. Overcooking it here compromises everything downstream.

KM 22–28

The Steep Plunge

An 890m descent over 5.9km at -15.2% follows the summit, hammering the legs with the steepest sustained downhill. Controlled eccentric loading protects the quads for the long back half.

KM 28–60

The Grind Home

Beyond the big descent, gently falling and flat terrain stretches to the finish. Holding running rhythm on tired legs across this final third separates strong days from fading ones.

That was a sample