| Harrow Weald to Carpentras | 577.93 mi (930.09 km) |
| Harrow Weald to Carquefou | 302.06 mi (486.12 km) |
| Harrow Weald to Carqueiranne | 659.51 mi (1,061.38 km) |
| Harrow Weald to Carrieres-sous-Poissy | 211.41 mi (340.23 km) |
| Harrow Weald to Carrieres-sur-Seine | 219.29 mi (352.91 km) |
| Harrow Weald to Carros | 643.85 mi (1,036.18 km) |
| Harrow Weald to Carvin | 162.46 mi (261.46 km) |
| Harrow Weald to Castanet-Tolosan | 565.33 mi (909.81 km) |
| Harrow Weald to Castelginest | 552.70 mi (889.48 km) |
| Harrow Weald to Castelnau-le-Lez | 584.58 mi (940.79 km) |
| Harrow Weald to Castelnaudary | 582.35 mi (937.21 km) |
| Harrow Weald to Castelsarrasin | 526.88 mi (847.93 km) |
| Harrow Weald to Castres | 565.93 mi (910.77 km) |
| Harrow Weald to Caudebec-les-Elbeuf | 171.30 mi (275.69 km) |
| Harrow Weald to Caudry | 192.83 mi (310.32 km) |
