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
Tamarack Ottawa Marathon
Best for
Strong PB attemptsNewer marathonersFlat-course PBs
Race B
Philadelphia Marathon
Best for
Newer marathonersQualifying pathway
Race A
Tamarack Ottawa Marathon
Ottawa, Canada
Race B
Philadelphia Marathon
Philadelphia, USA
Date
Expected May 2027
Nov 22, 2026
Month
May
Nov
Location
🇨🇦 Ottawa, Canada
🇺🇸 Philadelphia, USA
Terrain
Road
Road
Elevation gain
▲
95 m
205 m
PB potential
▲
Beginner friendly
World Major
No
No
Entry type
Open
Open
Entry status
Check official site
Open
Season
Spring · Americas
Autumn · Americas
Race-day temp.
10–19°C
8–15°C
Conditions
Canadian spring — tulip season, often sunny
Cool November, often clear
Humidity
50–65%
55–70%
Wind
10–20 km/h
10–20 km/h
Qualifies for
Boston Marathon
Boston Marathon
Want to know how these scores are calculated? See methodology →