Trail Running · Aosta Valley

🇮🇹ETC 15 km:
Course Analysis & Race Readiness

A 15 km race packing 1142 m of gain and 1138 m of loss across four climbs and three descents. A single 547 m climb rears up early, then gravity dominates with half the course pointed downhill.

CourseRecon scores your own training against the descending and climbing demands that define ETC 15 km — the sample analysis below shows exactly how.

14.9 km

Distance

+1,130 m

Vertical Gain

−1,130 m

Total Descent

Aug 25, 2026

Next Edition · 41 days out

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The Course · GPS-Measured

What 14.9 km / 9.3 mi and 1,130 m / 3,720 ft of vertical gain actually look like

Measured from the GPS track: 14.9 km / 9.3 mi and 1,130 m / 3,720 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

14.9km

Distance

+1,140m

Gain

+0.0 km−10 m

GPS-Measured

14.9km

Distance

+1,130m

Gain

Climb & Gradient

+1,130 mTotal Gain

−1,130 mTotal Loss

Gradient Distribution

16%

Flat

≤3% grade

18%

Run-Climb

3–15% up

20%

Steep Climb

>15% up

46%

Descent

downhill

Steepest Sustained Sections

ClimbCRUX

KM 3.3–5.6 · +547 m

+23.5%

Descent

KM 7.8–12.6 · −650 m

-13.6%

Climb

KM 0.4–2.8 · +250 m

+10.6%

Finish & Cutoff Times

What it takes to finish

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

1h 21m

Winning time

1h 25m

Top 5

1h 28m

Top 10

4h 30m

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 47% 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

Short duration keeps sustained aerobic load secondary to raw uphill and downhill power.

ClimbingVertical power

28%

1142 m of gain over 4 climbs, with a 547 m wall averaging 23.5% grade.

DescendingEccentric / braking

47%

1138 m of loss, half the course downhill, including a 650 m plunge.

DurabilityLate-race resilience

25%

Compressed distance means little recovery between a brutal climb and long, steep descents.

The Profile in One Line

Short, savage terrain: one huge early climb, then relentless descending over 1138 m of loss.

Aerobic FoundationalClimbing 28%Descending 47%Durability 25%

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

100

At just 15 km the aerobic system is stressed but not the limiter; short duration puts a ceiling on continuous aerobic cost.

Climbing

Four climbs stack 1142 m of gain, dominated by the 547 m crux averaging 23.5% over 2.3 km, demanding steep-grade power more than steady tempo.

Descending

With 1138 m of loss and 50% of the course downhill, including a 650 m descent averaging -13.6%, eccentric leg strength and control decide the day.

Durability

Little flat terrain and rapid transitions from a very steep climb into extended descending punish legs quickly despite the short distance.

KM 3.3–5.6

The 547 m Wall

A 2.3 km climb gaining 547 m at 23.5% is the decisive uphill effort, hauling you from the low course toward the 1954 m high point. Pace it wrong and the descents that follow will feel far worse.

KM 7.8–12.6

The Long Plunge

A 4.8 km descent shedding 650 m at -13.6% demands sustained braking and quad control. Legs already loaded from the big climb must absorb the longest downhill stretch of the race.

KM 0.4–2.8

Early Grind

A 250 m climb at 10.6% over the first kilometres warms nothing gently, setting up the harder 547 m ascent immediately after.

That was a sample