Jungfrau-Marathon Interlaken or The Kauai Marathon & Half Marathon — which comes out ahead?

The Kauai Marathon & Half Marathon has the stronger available profile on flat grade share and course flatness.

Route comparison snapshot

Jungfrau-Marathon Interlaken

Mapped route
Held
Elevation profile
Held
course flatness
30.0%
flat grade share
47.7%
lower ascent
1,960 m
climbing density
46.5 m/km
net elevation
1,761 m
maximum grade
35.4%

The Kauai Marathon & Half Marathon

Mapped route
Held
Elevation profile
Held
course flatness
1.9% Favoured
flat grade share
48.1% Favoured
lower ascent
607 m
climbing density
14.4 m/km
net elevation
-5 m
maximum grade
24.0%
Head-to-head comparison
MetricJungfrau-Marathon InterlakenThe Kauai Marathon & Half Marathon
Flat grade share47.7%48.1%
GAP factor (% slower than flat)30.0%1.9%
Uphill share45.6%25.1%
Steep-up share28.5%5.5%
Downhill share6.7%26.8%
Total ascent (m)1,960 m607 m
Climbing density (m/km)46.5 m/km14.4 m/km
Longest climb length (m)2,270 m2,320 m
Longest climb gain (m)379 m119 m
Longest climb average grade16.7%5.1%
Total descent (m)200 m612 m
Net elevation (m)1,761 m-5 m
Max absolute grade35.4%24.0%
Start elevation (m)566 m12 m
Finish elevation (m)2,327 m7 m
Scenic score100/100100/100
Conditions63/10032/100

Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.

Race facts that change the decision

Race facts comparison
FactJungfrau-Marathon InterlakenThe Kauai Marathon & Half Marathon
Schedule

Exact race date not confirmed. Event weekend starts 2026-09-05 (legacy event-level date).

Exact race date not confirmed. Event weekend starts 2026-09-06 (legacy event-level date).

LocationInterlaken, SwitzerlandKoloa, Hawaii
Actual distance42.2 km42.2 km
raceindex.org mapped route heldHeldHeld
raceindex.org elevation profile heldHeldHeld
Course typePoint To PointPoint To Point
SurfaceMixed: flat asphalt roads through the valley for the first ~10 km, then mountain roads and alpine nature/gravel paths on the climb to EigergletscherUnavailable
Elevation characterMountainousHilly
TerrainRoad, TrailRoad, Beach
SceneryMountain, Forest, Lakeside, CountrysideCoastal, Parkland, Canyon, Island, Mountain, Forest, Waterfront, Countryside
AtmosphereScenic Tour, Destination, WildernessDestination, Scenic Tour, Festival
TechnicalityModerateNon Technical
Total ascent1,960 m607 m
Climbing density46.5 m/km14.4 m/km
Total descent200 m612 m
Net elevation1,761 m-5 m
Max absolute grade35.4%24.0%
Flat grade share47.7%48.1%
GAP factor30.0%1.9%
Cutoff5:50:007:00:00
Entry modelOpenOpen

Schedule

Jungfrau-Marathon Interlaken

Exact race date not confirmed. Event weekend starts 2026-09-05 (legacy event-level date).

The Kauai Marathon & Half Marathon

Exact race date not confirmed. Event weekend starts 2026-09-06 (legacy event-level date).

Location

Jungfrau-Marathon Interlaken
Interlaken, Switzerland
The Kauai Marathon & Half Marathon
Koloa, Hawaii

Actual distance

Jungfrau-Marathon Interlaken
42.2 km
The Kauai Marathon & Half Marathon
42.2 km

raceindex.org mapped route held

Jungfrau-Marathon Interlaken
Held
The Kauai Marathon & Half Marathon
Held

raceindex.org elevation profile held

Jungfrau-Marathon Interlaken
Held
The Kauai Marathon & Half Marathon
Held

Course type

Jungfrau-Marathon Interlaken
Point To Point
The Kauai Marathon & Half Marathon
Point To Point

Surface

Jungfrau-Marathon Interlaken
Mixed: flat asphalt roads through the valley for the first ~10 km, then mountain roads and alpine nature/gravel paths on the climb to Eigergletscher
The Kauai Marathon & Half Marathon
Unavailable

Elevation character

Jungfrau-Marathon Interlaken
Mountainous
The Kauai Marathon & Half Marathon
Hilly

Terrain

Jungfrau-Marathon Interlaken
Road, Trail
The Kauai Marathon & Half Marathon
Road, Beach

Scenery

Jungfrau-Marathon Interlaken
Mountain, Forest, Lakeside, Countryside
The Kauai Marathon & Half Marathon
Coastal, Parkland, Canyon, Island, Mountain, Forest, Waterfront, Countryside

Atmosphere

Jungfrau-Marathon Interlaken
Scenic Tour, Destination, Wilderness
The Kauai Marathon & Half Marathon
Destination, Scenic Tour, Festival

Technicality

Jungfrau-Marathon Interlaken
Moderate
The Kauai Marathon & Half Marathon
Non Technical

Total ascent

Jungfrau-Marathon Interlaken
1,960 m
The Kauai Marathon & Half Marathon
607 m

Climbing density

Jungfrau-Marathon Interlaken
46.5 m/km
The Kauai Marathon & Half Marathon
14.4 m/km

Total descent

Jungfrau-Marathon Interlaken
200 m
The Kauai Marathon & Half Marathon
612 m

Net elevation

Jungfrau-Marathon Interlaken
1,761 m
The Kauai Marathon & Half Marathon
-5 m

Max absolute grade

Jungfrau-Marathon Interlaken
35.4%
The Kauai Marathon & Half Marathon
24.0%

Flat grade share

Jungfrau-Marathon Interlaken
47.7%
The Kauai Marathon & Half Marathon
48.1%

GAP factor

Jungfrau-Marathon Interlaken
30.0%
The Kauai Marathon & Half Marathon
1.9%

Cutoff

Jungfrau-Marathon Interlaken
5:50:00
The Kauai Marathon & Half Marathon
7:00:00

Entry model

Jungfrau-Marathon Interlaken
Open
The Kauai Marathon & Half Marathon
Open

Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.

Common questions

Which is flatter, Jungfrau-Marathon Interlaken or The Kauai Marathon & Half Marathon?

The Kauai Marathon & Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.

Read the full pages

How figures are calculated →