Trondheim Maraton Half Marathon or DNB Oslo Marathon Half Marathon — which comes out ahead?

Trondheim Maraton Half Marathon has the stronger available profile on flat grade share, course flatness and conditions.

Route comparison snapshot

Trondheim Maraton Half Marathon

Mapped route
Held
Elevation profile
Held
course flatness
0.4% Favoured
flat grade share
78.7% Favoured
lower ascent
127 m
climbing density
6.0 m/km
net elevation
1 m
maximum grade
8.3%

DNB Oslo Marathon Half Marathon

Mapped route
Held
Elevation profile
Held
course flatness
0.5%
flat grade share
72.1%
lower ascent
153 m
climbing density
7.2 m/km
net elevation
-0 m
maximum grade
6.5%
Head-to-head comparison
MetricTrondheim Maraton Half MarathonDNB Oslo Marathon Half Marathon
Flat grade share78.7%72.1%
GAP factor (% slower than flat)0.4%0.5%
Uphill share11.3%12.2%
Steep-up share0.4%0.4%
Downhill share10.0%15.7%
Total ascent (m)127 m153 m
Climbing density (m/km)6.0 m/km7.2 m/km
Longest climb length (m)1,570 m1,050 m
Longest climb gain (m)26 m29 m
Longest climb average grade1.7%2.8%
Total descent (m)125 m153 m
Net elevation (m)1 m-0 m
Max absolute grade8.3%6.5%
Start elevation (m)10 m3 m
Finish elevation (m)11 m3 m
Scenic score60/10068/100
Conditions85/10084/100

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
FactTrondheim Maraton Half MarathonDNB Oslo Marathon Half Marathon
Schedule

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

Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).

LocationTrondheim, NorwayOslo, Norway
Actual distance21.1 km21.1 km
raceindex.org mapped route heldHeldHeld
raceindex.org elevation profile heldHeldHeld
Course typeLoopUnavailable
TerrainUnavailableRoad
SceneryCity, Waterfront, Riverside, HistoricCity, Waterfront, Coastal, Historic, Parkland
AtmosphereBig City, Scenic TourBig City, Festival, Scenic Tour
Total ascent127 m153 m
Climbing density6.0 m/km7.2 m/km
Total descent125 m153 m
Net elevation1 m-0 m
Max absolute grade8.3%6.5%
Flat grade share78.7%72.1%
GAP factor0.4%0.5%
CutoffUnavailable3:30:00
Entry modelOpenOpen

Schedule

Trondheim Maraton Half Marathon

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

DNB Oslo Marathon Half Marathon

Exact race date not confirmed. Event weekend starts 2026-09-12 (legacy event-level date).

Location

Trondheim Maraton Half Marathon
Trondheim, Norway
DNB Oslo Marathon Half Marathon
Oslo, Norway

Actual distance

Trondheim Maraton Half Marathon
21.1 km
DNB Oslo Marathon Half Marathon
21.1 km

raceindex.org mapped route held

Trondheim Maraton Half Marathon
Held
DNB Oslo Marathon Half Marathon
Held

raceindex.org elevation profile held

Trondheim Maraton Half Marathon
Held
DNB Oslo Marathon Half Marathon
Held

Course type

Trondheim Maraton Half Marathon
Loop
DNB Oslo Marathon Half Marathon
Unavailable

Terrain

Trondheim Maraton Half Marathon
Unavailable
DNB Oslo Marathon Half Marathon
Road

Scenery

Trondheim Maraton Half Marathon
City, Waterfront, Riverside, Historic
DNB Oslo Marathon Half Marathon
City, Waterfront, Coastal, Historic, Parkland

Atmosphere

Trondheim Maraton Half Marathon
Big City, Scenic Tour
DNB Oslo Marathon Half Marathon
Big City, Festival, Scenic Tour

Total ascent

Trondheim Maraton Half Marathon
127 m
DNB Oslo Marathon Half Marathon
153 m

Climbing density

Trondheim Maraton Half Marathon
6.0 m/km
DNB Oslo Marathon Half Marathon
7.2 m/km

Total descent

Trondheim Maraton Half Marathon
125 m
DNB Oslo Marathon Half Marathon
153 m

Net elevation

Trondheim Maraton Half Marathon
1 m
DNB Oslo Marathon Half Marathon
-0 m

Max absolute grade

Trondheim Maraton Half Marathon
8.3%
DNB Oslo Marathon Half Marathon
6.5%

Flat grade share

Trondheim Maraton Half Marathon
78.7%
DNB Oslo Marathon Half Marathon
72.1%

GAP factor

Trondheim Maraton Half Marathon
0.4%
DNB Oslo Marathon Half Marathon
0.5%

Cutoff

Trondheim Maraton Half Marathon
Unavailable
DNB Oslo Marathon Half Marathon
3:30:00

Entry model

Trondheim Maraton Half Marathon
Open
DNB Oslo 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, Trondheim Maraton Half Marathon or DNB Oslo Marathon Half Marathon?

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

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