| Didcot to Cabestany | 646.99 mi (1,041.23 km) |
| Didcot to Cabries | 642.56 mi (1,034.10 km) |
| Didcot to Cachan | 250.49 mi (403.12 km) |
| Didcot to Caen | 171.95 mi (276.73 km) |
| Didcot to Cagnes-sur-Mer | 672.60 mi (1,082.45 km) |
| Didcot to Cahors | 509.80 mi (820.44 km) |
| Didcot to Calais | 141.37 mi (227.51 km) |
| Didcot to Caluire-et-Cuire | 487.75 mi (784.96 km) |
| Didcot to Cambrai | 218.62 mi (351.84 km) |
| Didcot to Canet-en-Roussillon | 646.25 mi (1,040.04 km) |
| Didcot to Cannes | 675.61 mi (1,087.30 km) |
| Didcot to Canteleu | 179.34 mi (288.62 km) |
| Didcot to Capbreton | 550.34 mi (885.68 km) |
| Didcot to Carcassonne | 603.73 mi (971.60 km) |
| Didcot to Carmaux | 545.25 mi (877.50 km) |
