| Didcot to Cehegin | 934.08 mi (1,503.26 km) |
| Didcot to Cervello | 721.47 mi (1,161.10 km) |
| Didcot to Cervera | 696.96 mi (1,121.65 km) |
| Didcot to Ceuti | 934.63 mi (1,504.15 km) |
| Didcot to Cheste | 838.27 mi (1,349.07 km) |
| Didcot to Chiclana de la Frontera | 1,076.83 mi (1,732.99 km) |
| Didcot to Chipiona | 1,058.65 mi (1,703.73 km) |
| Didcot to Chiva | 838.79 mi (1,349.91 km) |
| Didcot to Churriana de la Vega | 1,005.73 mi (1,618.56 km) |
| Didcot to Ciempozuelos | 799.01 mi (1,285.87 km) |
| Didcot to Cieza | 923.60 mi (1,486.39 km) |
| Didcot to Cisterniga | 709.06 mi (1,141.12 km) |
| Didcot to Ciudad de Melilla | 1,131.01 mi (1,820.18 km) |
| Didcot to Ciudad Real | 881.63 mi (1,418.84 km) |
| Didcot to Ciudad-Rodrigo | 801.35 mi (1,289.64 km) |
