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
Seattle Marathon
Best for
Newer marathonersQualifying pathway
Race B
Portland Marathon
Best for
Newer marathonersQualifying pathway
Race A
Seattle Marathon
Seattle, USA
Race B
Portland Marathon
Portland, USA
Date
Nov 29, 2026
Expected October 2027
Month
Nov
Oct
Location
🇺🇸 Seattle, USA
🇺🇸 Portland, USA
Terrain
Road
Road
Elevation gain
▲
215 m
230 m
PB potential
Beginner friendly
World Major
No
No
Entry type
Open
Open
Entry status
Open
Check official site
Season
Autumn · Americas
Autumn · Americas
Race-day temp.
5–12°C
10–17°C
Conditions
Pacific Northwest autumn — cool, overcast, possible drizzle
Pacific Northwest autumn — cool and crisp
Humidity
72–85%
65–75%
Wind
10–20 km/h westerly
10–20 km/h
Qualifies for
Boston Marathon
Boston Marathon
Want to know how these scores are calculated? See methodology →