| Ottawa to Campo de Criptana | 4,313.73 mi (6,942.27 km) |
| Ottawa to Campos del Puerto | 4,585.04 mi (7,378.91 km) |
| Ottawa to Canals | 4,443.94 mi (7,151.83 km) |
| Ottawa to Candelaria | 4,086.24 mi (6,576.16 km) |
| Ottawa to Canet de Mar | 4,481.55 mi (7,212.36 km) |
| Ottawa to Cangas | 3,958.23 mi (6,370.16 km) |
| Ottawa to Cangas de Narcea | 4,027.87 mi (6,482.23 km) |
| Ottawa to Canovellas | 4,467.61 mi (7,189.92 km) |
| Ottawa to Canteras | 4,475.14 mi (7,202.03 km) |
| Ottawa to Cantillana | 4,256.61 mi (6,850.36 km) |
| Ottawa to Capdepera | 4,592.39 mi (7,390.75 km) |
| Ottawa to Carballo | 3,931.47 mi (6,327.09 km) |
| Ottawa to Carcagente | 4,443.86 mi (7,151.69 km) |
| Ottawa to Cardedeu | 4,470.07 mi (7,193.88 km) |
| Ottawa to Carlet | 4,436.65 mi (7,140.10 km) |
