| Ontario to Caldicot | 5,331.28 mi (8,579.87 km) |
| Ontario to Calne | 5,362.63 mi (8,630.32 km) |
| Ontario to Cam | 5,339.13 mi (8,592.50 km) |
| Ontario to Camberley | 5,408.65 mi (8,704.38 km) |
| Ontario to Camborne | 5,304.29 mi (8,536.42 km) |
| Ontario to Cambridge | 5,396.73 mi (8,685.20 km) |
| Ontario to Cambuslang | 5,103.63 mi (8,213.50 km) |
| Ontario to Canford Cliffs | 5,398.01 mi (8,687.26 km) |
| Ontario to Cannock | 5,306.30 mi (8,539.67 km) |
| Ontario to Canterbury | 5,470.00 mi (8,803.12 km) |
| Ontario to Carlisle | 5,181.04 mi (8,338.08 km) |
| Ontario to Carlton Colville | 5,434.57 mi (8,746.10 km) |
| Ontario to Carluke | 5,117.46 mi (8,235.75 km) |
| Ontario to Carnoustie | 5,118.63 mi (8,237.64 km) |
| Ontario to Carshalton | 5,425.93 mi (8,732.19 km) |
