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Toronto Marathon Toronto, Ontario, Canada

Name: Toronto Marathon
Start: 2026-10-18
End: 2026-10-18

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Toronto Marathon

Course maps

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HelloDrifter does not warrant the accuracy of this course data; it is provided for informational use only. Verify the course against the event organizer's published materials before relying on it for navigation or safety-critical activities.

Heads up: this course is not currently managed by a race director. Check with the event organizer for any last-minute changes before you rely on it.

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5K
10K
Half Marathon
Marathon

Foot race | 18 Oct 2026

26.3 mi

Distance

Elevation gain

381 ft

Elevation high

272 ft

Elevation avg

Road/Asphalt

Elevation loss

246 ft

Elevation low

Climb factor

What is climb factor?

The climb factor for a course is the percentage of your energy used in hill-climbing compared to the energy expended running the flats.

This course has a climb factor of 0% over 26.3 mi, which means that the energy expenditure for the run is equivalent to running a flat 26.3 mi.

Climb factor is provided courtesy of Ben Crowell, who both authored climb factor's scientific paper and wrote the open source software for it. You can read more about it here .

Course last updated 12 Oct 2026

All values approximate

Distance & elevation data

The distance or elevation data not precisely what you expect for this route?

Data from a GPS device can be rough, especially in areas where the terrain (trees, canyons) interfere with GPS signals. And routes drawn on our maps are reliant on people marking trails from satellite images -- the details of which can be hidden by trees.

Elevation can be tricky too. Elevation data is stored on spaced topographical lines, and determining the elevation of a point requires computers to estimate based on how close the point is to the topographical line.

We mitigate this by calculating distance in 3-D (think Pythagorean theorem) and using mathematical techiniques to smooth the elevation data. We come close, but no one can be perfect with imperfect data, even in 2026.

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Stats summary

Race distance	Distance	Ele gain	Ele loss	Ele avg	Paved	Gravel	Dirt	Narrow
5K	3.1 mi	82 ft	82 ft	262 ft	89%	11%	0%	24%
10K	6.3 mi	141 ft	144 ft	259 ft	89%	11%	0%	37%
Half Marathon	13.2 mi	266 ft	279 ft	285 ft	98%	2%	0%	19%
Marathon	26.3 mi	522 ft	538 ft	272 ft	96%	4%	0%	14%