| Didcot to Coudekerque-Branche | 161.91 mi (260.57 km) |
| Didcot to Coueron | 304.12 mi (489.43 km) |
| Didcot to Coulommiers | 271.46 mi (436.87 km) |
| Didcot to Courbevoic | 242.52 mi (390.29 km) |
| Didcot to Courcouronnes | 262.42 mi (422.32 km) |
| Didcot to Cournon-d'Auvergne | 452.73 mi (728.60 km) |
| Didcot to Courrieres | 198.48 mi (319.42 km) |
| Didcot to Coutras | 456.46 mi (734.61 km) |
| Didcot to Couzeix | 411.64 mi (662.47 km) |
| Didcot to Cran-Gevrier | 516.37 mi (831.01 km) |
| Didcot to Craponne | 487.51 mi (784.57 km) |
| Didcot to Creil | 230.55 mi (371.04 km) |
| Didcot to Crepy-en-Valois | 244.64 mi (393.71 km) |
| Didcot to Crest | 555.52 mi (894.02 km) |
| Didcot to Creteil | 254.22 mi (409.13 km) |
