| Harrow to Carpentras | 576.83 mi (928.32 km) |
| Harrow to Carquefou | 300.62 mi (483.80 km) |
| Harrow to Carqueiranne | 658.44 mi (1,059.66 km) |
| Harrow to Carrieres-sous-Poissy | 210.36 mi (338.54 km) |
| Harrow to Carrieres-sur-Seine | 218.28 mi (351.29 km) |
| Harrow to Carros | 642.90 mi (1,034.64 km) |
| Harrow to Carvin | 162.12 mi (260.90 km) |
| Harrow to Castanet-Tolosan | 563.99 mi (907.66 km) |
| Harrow to Castelginest | 551.36 mi (887.32 km) |
| Harrow to Castelnau-le-Lez | 583.38 mi (938.86 km) |
| Harrow to Castelnaudary | 581.04 mi (935.09 km) |
| Harrow to Castelsarrasin | 525.53 mi (845.75 km) |
| Harrow to Castres | 564.63 mi (908.68 km) |
| Harrow to Caudebec-les-Elbeuf | 170.10 mi (273.75 km) |
| Harrow to Caudry | 192.39 mi (309.62 km) |
