| Harrow on the Hill to Carpentras | 575.45 mi (926.10 km) |
| Harrow on the Hill to Carquefou | 299.49 mi (481.99 km) |
| Harrow on the Hill to Carqueiranne | 657.06 mi (1,057.44 km) |
| Harrow on the Hill to Carrieres-sous-Poissy | 208.98 mi (336.33 km) |
| Harrow on the Hill to Carrieres-sur-Seine | 216.91 mi (349.09 km) |
| Harrow on the Hill to Carros | 641.54 mi (1,032.46 km) |
| Harrow on the Hill to Carvin | 161.04 mi (259.16 km) |
| Harrow on the Hill to Castanet-Tolosan | 562.66 mi (905.52 km) |
| Harrow on the Hill to Castelginest | 550.03 mi (885.19 km) |
| Harrow on the Hill to Castelnau-le-Lez | 582.00 mi (936.64 km) |
| Harrow on the Hill to Castelnaudary | 579.69 mi (932.93 km) |
| Harrow on the Hill to Castelsarrasin | 524.21 mi (843.63 km) |
| Harrow on the Hill to Castres | 563.27 mi (906.50 km) |
| Harrow on the Hill to Caudebec-les-Elbeuf | 168.72 mi (271.54 km) |
| Harrow on the Hill to Caudry | 191.25 mi (307.79 km) |
