Distance between Montréal and Ottawa (straight line)
The straight-line distance between Montréal and Ottawa, both in Canada, is 102 miles (165 km), as the crow flies, measured from one city centre to the other. It is the shortest path over the Earth's surface; any road between them is longer.
Straight-line distance
102 miles
165 km · straight line
Heading from Montréal
267° (west)
initial compass bearing to Ottawa
Midpoint
45.4649° N, 74.6439° W
halfway along the straight line
Straight-line (great-circle) distance, as the crow flies. The road distance is longer.
MontréalOttawaThe line is the great circle: straight over the globe, curved on a flat map.
Measure your own two places
Pick any two cities, addresses or coordinates in the calculator, or start from where you are standing. It gives the same straight-line distance, in miles and kilometres.
Montréal to Ottawa at a glance
- Straight-line distance
- 102 miles (165 km), as the crow flies
- Heading from Montréal
- 267° (west) to Ottawa
- Heading from Ottawa
- 85° (east) to Montréal
- Midpoint
- 45.4649° N, 74.6439° W, halfway along the straight line
- Montréal, Canada
- 45.5088° N, 73.5878° W (city centre)
- Ottawa, Canada
- 45.4112° N, 75.6981° W (city centre)
Nearby city pairs
Other distances from Montréal
- Montréal to Toronto312 miles
- Montréal to Edmonton1,845 miles
- Montréal to Calgary1,876 miles
- Montréal to Vancouver2,290 miles
Other distances from Ottawa
- Ottawa to Toronto217 miles
- Ottawa to Edmonton1,762 miles
- Ottawa to Calgary1,788 miles
- Ottawa to Vancouver2,200 miles
Questions
Is 102 miles (165 km) the driving distance from Montréal to Ottawa?
No. 102 miles (165 km) is the straight-line distance between the two city centres, as the crow flies. A road route is always longer, because roads bend around terrain and water, and MapGO does not measure driving distance or travel time.
How is the distance between Montréal and Ottawa measured?
Along a great circle: the shortest line over the Earth's surface, from Montréal's centre (45.5088° N, 73.5878° W) to Ottawa's (45.4112° N, 75.6981° W). This is what "straight-line distance" and "as the crow flies" mean on a globe. On a flat map the line can look curved.
How accurate is this distance?
Within about 0.5% for the two centre points. The figure treats the Earth as a sphere (the haversine formula), while the real Earth is slightly flattened, which shifts a long straight-line distance by up to about 0.5%. Measuring from another part of either city changes it more, since a large city can be tens of kilometres across.
Computed by MapGO from each city's centre point (GeoNames) with the haversine formula. All distances on this page are straight lines over the Earth's surface, not road distances.