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
Boston Marathon
Best for
World Major bucket-list
Race B
Tokyo Marathon
Best for
Strong PB attemptsWorld Major bucket-list
Race A
Boston Marathon
Boston, USA
Race B
Tokyo Marathon
Tokyo, Japan
Date
Expected April 2027
Expected March 2027
Month
Apr
Mar
Location
🇺🇸 Boston, USA
🇯🇵 Tokyo, Japan
Terrain
Road
Road
Elevation gain
247 m
▲
112 m
PB potential
▲
Beginner friendly
▲
World Major
✓ Yes
✓ Yes
Entry type
Qualifier
Lottery
Entry status
Bib transfer open
Lottery open
Season
Spring · Americas
Spring · Asia
Race-day temp.
8–16°C
7–14°C
Conditions
Variable — can be ideal or brutal
Cool and partly cloudy
Humidity
50–70%
55–65%
Wind
Variable 10–25 km/h
10–15 km/h NW
Qualifies for
—
—
Want to know how these scores are calculated? See methodology →