| Didcot to Cognac | 410.46 mi (660.57 km) |
| Didcot to Cogolin | 681.09 mi (1,096.11 km) |
| Didcot to Colmar | 453.44 mi (729.74 km) |
| Didcot to Colombes | 241.09 mi (388.00 km) |
| Didcot to Colomiers | 565.01 mi (909.29 km) |
| Didcot to Combs-la-Ville | 263.53 mi (424.10 km) |
| Didcot to Comines | 193.02 mi (310.63 km) |
| Didcot to Compiegne | 234.05 mi (376.66 km) |
| Didcot to Concarneau | 284.10 mi (457.22 km) |
| Didcot to Conde-sur-l'Escaut | 224.61 mi (361.47 km) |
| Didcot to Conflans-Sainte-Honorine | 232.67 mi (374.44 km) |
| Didcot to Corbas | 496.59 mi (799.19 km) |
| Didcot to Corbeil-Essonnes | 264.41 mi (425.53 km) |
| Didcot to Cormeilles-en-Parisis | 236.94 mi (381.31 km) |
| Didcot to Cosne sur Loire | 344.80 mi (554.90 km) |
