| Castricum to Cividale del Friuli | 594.52 mi (956.78 km) |
| Castricum to Civita Castellana | 794.52 mi (1,278.66 km) |
| Castricum to Civitanova Marche | 763.34 mi (1,228.47 km) |
| Castricum to Civitavecchia | 794.64 mi (1,278.85 km) |
| Castricum to Civitella in Val di Chiana | 709.50 mi (1,141.84 km) |
| Castricum to Clusone | 518.35 mi (834.20 km) |
| Castricum to Coccaglio | 538.97 mi (867.39 km) |
| Castricum to Codigoro | 631.49 mi (1,016.29 km) |
| Castricum to Codogno | 559.28 mi (900.08 km) |
| Castricum to Codroipo | 588.86 mi (947.68 km) |
| Castricum to Cogoleto | 592.34 mi (953.29 km) |
| Castricum to Colle di Val d'Elsa | 698.72 mi (1,124.47 km) |
| Castricum to Colle Salvetti | 673.63 mi (1,084.10 km) |
| Castricum to Collecchio | 595.07 mi (957.68 km) |
| Castricum to Colleferro | 842.82 mi (1,356.38 km) |
