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