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Trail Running · Grindelwald

🇨🇭Eiger Ultra Trail 101 km:
Course Analysis & Race Readiness

Ninety-nine kilometers with 6,281 m of climbing and 6,280 m of descent across 16 climbs and 13 descents. Nearly half the route points downhill, demanding legs that can absorb repeated steep, sustained descending.

CourseRecon scores your own training against the descending and durability demands that define Eiger Ultra Trail 101 km — the sample analysis below shows exactly how.

99.2 km
Distance
+6,240 m
Vertical Gain
−6,240 m
Total Descent
Jul 18, 2026
Last Edition · Past
Check YOUR readiness
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The Course · GPS-Measured

What 99.2 km / 61.7 mi and 6,240 m / 20,480 ft of vertical gain actually look like

Measured from the GPS track: 99.2 km / 61.7 mi and 6,240 m / 20,480 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
99.2km
Distance
+6,280m
Gain
+0.0 km−40 m
GPS-Measured
99.2km
Distance
+6,240m
Gain
Climb & Gradient
+6,240 mTotal Gain
−6,240 mTotal Loss
Gradient Distribution
15%
Flat
≤3% grade
24%
Run-Climb
3–15% up
17%
Steep Climb
>15% up
44%
Descent
downhill
Steepest Sustained Sections
1
Climb
KM 62.7–67.4 · +948 m
+20.3%
2
Climb
KM 31.4–34.5 · +627 m
+20.2%
3
Descent
KM 72.6–75.0 · −462 m
-19.2%
4
Climb
KM 78.9–81.2 · +370 m
+16%
Finish & Cutoff Times

What it takes to finish

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

11h 05m
Winning time
12h 16m
Top 5
13h 10m
Top 10
25h 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. Descending carries 52% 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 ultra-length effort from 1,035 m to a 2,670 m high point over 99 km.
ClimbingVertical power
20%
16 climbs totaling 6,281 m, including a 994 m and 10.6 km sustained ascent.
DescendingEccentric / braking
52%
6,280 m of loss with 19.5% very steep descent grades and a 1,334 m drop.
DurabilityLate-race resilience
28%
Sixteen climbs and thirteen descents batter the legs across the full ultra distance.
The Profile in One Line

A relentlessly vertical ultra where 6,280 m of descent, much of it very steep, decides the outcome.

Aerobic FoundationalClimbing 20%Descending 52%Durability 28%

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
57
OUT OF 100
QUESTIONABLE
For a representative strong mountain-ultra athlete

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

Pillar Breakdown
Aerobic
72
The 99 km distance with 6,281 m of gain and a climb to 2,670 m requires deep aerobic endurance held for ultra-length hours.
Climbing
86
With 16 climbs, a 994 m biggest gain, and a 10.6 km longest ascent, plus grades near 20%, the course demands strong, repeatable uphill power.
Descending
40
Descending is the defining pillar: 6,280 m of loss, 19.5% of the route at very steep descent grades, and a single 1,334 m drop punish quads and technique.
Durability
69
Thirteen descents and sixteen climbs stacked across 99 km erode leg integrity, testing the ability to keep descending cleanly late.
Km 62.7–67.4
The 948 m Steep Wall
A 948 m climb over 4.7 km at 20.3% grade arrives past 60 km, the steepest sustained ascent when fatigue is already deep.
Km 72.6 onward
Very Steep Descent
A 462 m plunge at -19.2% grade begins a stretch of punishing downhill, feeding into the course's 1,334 m biggest descent that hammers tired quads.
Km 31.4–34.5
Mid-Race 627 m Climb
A 627 m ascent over 3.1 km at 20.2% tests climbing power at the midpoint before the harder second half.
That was a sample

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