| Ontario to Cosham | 5,420.31 mi (8,723.14 km) |
| Ontario to Costessey | 5,410.23 mi (8,706.93 km) |
| Ontario to Cottingham | 5,308.38 mi (8,543.01 km) |
| Ontario to Coulsdon | 5,428.88 mi (8,736.94 km) |
| Ontario to Coventry | 5,335.49 mi (8,586.64 km) |
| Ontario to Cowdenbeath | 5,116.19 mi (8,233.71 km) |
| Ontario to Cowes | 5,416.30 mi (8,716.69 km) |
| Ontario to Cowley | 5,408.37 mi (8,703.93 km) |
| Ontario to Cowley | 5,375.29 mi (8,650.70 km) |
| Ontario to Cramlington | 5,214.42 mi (8,391.80 km) |
| Ontario to Cranleigh | 5,426.26 mi (8,732.73 km) |
| Ontario to Crawley | 5,436.99 mi (8,749.99 km) |
| Ontario to Crayford | 5,433.35 mi (8,744.13 km) |
| Ontario to Crewe | 5,275.06 mi (8,489.38 km) |
| Ontario to Crigglestone | 5,280.05 mi (8,497.41 km) |
