Free tool
Compare marathons
Side-by-side comparison of elevation, PB potential, beginner friendliness, terrain, weather, and entry details. Pick two races and see how they stack up.
Race A
vs
Race B
Race A
Copenhagen Marathon
Best for
Strong PB attemptsFirst marathonsFlat-course PBs
Race B
NN Rotterdam Marathon
Best for
Elite PB chasingFirst marathonsFlat-course PBs
Race A
Copenhagen Marathon
Copenhagen, Denmark
Race B
NN Rotterdam Marathon
Rotterdam, Netherlands
Date
Expected May 2027
Expected April 2027
Month
May
Apr
Location
🇩🇰 Copenhagen, Denmark
🇳🇱 Rotterdam, Netherlands
Terrain
Road
Road
Elevation gain
▲
10 m
15 m
PB potential
▲
Beginner friendly
World Major
No
No
Entry type
Open
Open
Entry status
Check official site
Check official site
Season
Spring · Europe
Spring · Europe
Race-day temp.
12–18°C
7–14°C
Conditions
Mild and partly cloudy, comfortable for all paces
Cool and overcast, occasionally breezy
Humidity
55–70%
65–75%
Wind
10–20 km/h variable
10–20 km/h W
Qualifies for
Boston Marathon
Boston Marathon
Want to know how these scores are calculated? See methodology →