Ottawa Fall Colours Marathon
Ottawa, ON, Canada · October 10, 2026
Race Day Weather
47°at start
60° high
Light
Dry
Cool morning, steady conditions
Runners will face a steady temperature rise from 45°F at the start to 60°F by the finish. Winds will be from the W, peaking at 8 mph with gusts up to 22 mph. With humidity at 66%, hydration will be important, and runners should pace conservatively early on to maximize performance.
Race day forecast available in 135 days
Pre-raceRace windowPost-race
Get forecast alerts for Ottawa Fall Colours Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
FAQ
When is the 2026 Ottawa Fall Colours Marathon?
The 2026 Ottawa Fall Colours Marathon will be held on Saturday October 10, 2026.
Is the Ottawa Fall Colours Marathon a Boston Marathon Qualifier?
Yes, the Ottawa Fall Colours Marathon is an official Boston Marathon qualifier.
What will the weather be like for the 2026 Ottawa Fall Colours Marathon?
The forecast calls for a high of 60°F and a low of 44°F with a 14% chance of rain.
More ON Races
Sudbury Rocks Marathon
2026-05-24 · Sudbury, ON, Canada
Niagara Ultra Races Marathon
2026-06-20 · Niagara-on-the-Lake, ON, Canada
Georgina Marathon
2026-09-13 · Georgina, ON, Canada
That Dam Hill Marathon
2026-09-19 · London, ON, Canada
The County Marathon
2026-10-04 · Wellington, ON, Canada
Muskoka Marathon
2026-10-04 · Bracebridge, ON, Canada