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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
Portland Marathon
Best for
Newer marathonersQualifying pathway
Race B
Grandma's Marathon
Best for
Well-rounded marathon experience
Race A
Portland Marathon
Portland, USA
Race B
Grandma's Marathon
Duluth, USA
Date
Expected October 2027
Expected June 2027
Month
Oct
Jun
Location
🇺🇸 Portland, USA
🇺🇸 Duluth, USA
Terrain
Road
Road
Elevation gain
230 m
▲
165 m
PB potential
Beginner friendly
▲
World Major
No
No
Entry type
Open
Open
Entry status
Check official site
Check official site
Season
Autumn · Americas
Summer · Americas
Race-day temp.
10–17°C
10–22°C
Conditions
Pacific Northwest autumn — cool and crisp
Variable — can be ideal or uncomfortably warm
Humidity
65–75%
60–75%
Wind
10–20 km/h
10–25 km/h off the lake
Qualifies for
Boston Marathon
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Want to know how these scores are calculated? See methodology →