| Didcot to Carpentras | 597.19 mi (961.08 km) |
| Didcot to Carquefou | 297.94 mi (479.49 km) |
| Didcot to Carqueiranne | 679.69 mi (1,093.86 km) |
| Didcot to Carrieres-sous-Poissy | 233.84 mi (376.33 km) |
| Didcot to Carrieres-sur-Seine | 242.82 mi (390.78 km) |
| Didcot to Carros | 667.51 mi (1,074.25 km) |
| Didcot to Carvin | 197.90 mi (318.49 km) |
| Didcot to Castanet-Tolosan | 573.29 mi (922.61 km) |
| Didcot to Castelginest | 560.58 mi (902.16 km) |
| Didcot to Castelnau-le-Lez | 600.07 mi (965.73 km) |
| Didcot to Castelnaudary | 591.61 mi (952.11 km) |
| Didcot to Castelsarrasin | 533.91 mi (859.25 km) |
| Didcot to Castres | 576.40 mi (927.62 km) |
| Didcot to Caudebec-les-Elbeuf | 188.97 mi (304.12 km) |
| Didcot to Caudry | 227.18 mi (365.61 km) |
