| Didcot to Cividale del Friuli | 765.98 mi (1,232.73 km) |
| Didcot to Civita Castellana | 907.31 mi (1,460.17 km) |
| Didcot to Civitanova Marche | 901.87 mi (1,451.42 km) |
| Didcot to Civitavecchia | 897.98 mi (1,445.16 km) |
| Didcot to Civitella in Val di Chiana | 825.92 mi (1,329.19 km) |
| Didcot to Clusone | 644.04 mi (1,036.48 km) |
| Didcot to Coccaglio | 660.01 mi (1,062.18 km) |
| Didcot to Codigoro | 770.75 mi (1,240.41 km) |
| Didcot to Codogno | 670.04 mi (1,078.32 km) |
| Didcot to Codroipo | 753.83 mi (1,213.17 km) |
| Didcot to Cogoleto | 675.28 mi (1,086.75 km) |
| Didcot to Colle di Val d'Elsa | 807.31 mi (1,299.24 km) |
| Didcot to Colle Salvetti | 775.58 mi (1,248.17 km) |
| Didcot to Collecchio | 707.79 mi (1,139.08 km) |
| Didcot to Colleferro | 957.12 mi (1,540.33 km) |
