| Irthlingborough to Carpentras | 627.54 mi (1,009.93 km) |
| Irthlingborough to Carquefou | 349.53 mi (562.52 km) |
| Irthlingborough to Carqueiranne | 708.70 mi (1,140.54 km) |
| Irthlingborough to Carrieres-sous-Poissy | 260.59 mi (419.37 km) |
| Irthlingborough to Carrieres-sur-Seine | 267.92 mi (431.18 km) |
| Irthlingborough to Carros | 691.30 mi (1,112.54 km) |
| Irthlingborough to Carvin | 199.22 mi (320.61 km) |
| Irthlingborough to Castanet-Tolosan | 616.34 mi (991.90 km) |
| Irthlingborough to Castelginest | 603.70 mi (971.55 km) |
| Irthlingborough to Castelnau-le-Lez | 635.20 mi (1,022.26 km) |
| Irthlingborough to Castelnaudary | 633.44 mi (1,019.42 km) |
| Irthlingborough to Castelsarrasin | 577.79 mi (929.86 km) |
| Irthlingborough to Castres | 617.03 mi (993.02 km) |
| Irthlingborough to Caudebec-les-Elbeuf | 222.04 mi (357.34 km) |
| Irthlingborough to Caudry | 231.09 mi (371.90 km) |
