| Ontario to Campo de Criptana | 5,862.17 mi (9,434.26 km) |
| Ontario to Campos del Puerto | 6,101.72 mi (9,819.76 km) |
| Ontario to Canals | 5,983.76 mi (9,629.93 km) |
| Ontario to Candelaria | 5,727.19 mi (9,217.03 km) |
| Ontario to Canet de Mar | 5,981.01 mi (9,625.51 km) |
| Ontario to Cangas | 5,507.59 mi (8,863.60 km) |
| Ontario to Cangas de Narcea | 5,559.24 mi (8,946.74 km) |
| Ontario to Canovellas | 5,968.55 mi (9,605.45 km) |
| Ontario to Canteras | 6,027.94 mi (9,701.03 km) |
| Ontario to Cantillana | 5,830.49 mi (9,383.27 km) |
| Ontario to Capdepera | 6,104.34 mi (9,823.98 km) |
| Ontario to Carballo | 5,471.88 mi (8,806.14 km) |
| Ontario to Carcagente | 5,981.66 mi (9,626.55 km) |
| Ontario to Cardedeu | 5,970.34 mi (9,608.34 km) |
| Ontario to Carlet | 5,973.95 mi (9,614.15 km) |
