| Portishead to Cividale del Friuli | 823.31 mi (1,325.00 km) |
| Portishead to Civita Castellana | 953.83 mi (1,535.04 km) |
| Portishead to Civitanova Marche | 953.03 mi (1,533.75 km) |
| Portishead to Civitavecchia | 942.82 mi (1,517.32 km) |
| Portishead to Civitella in Val di Chiana | 873.84 mi (1,406.30 km) |
| Portishead to Clusone | 695.66 mi (1,119.56 km) |
| Portishead to Coccaglio | 710.66 mi (1,143.69 km) |
| Portishead to Codigoro | 823.10 mi (1,324.65 km) |
| Portishead to Codogno | 718.82 mi (1,156.83 km) |
| Portishead to Codroipo | 810.31 mi (1,304.06 km) |
| Portishead to Cogoleto | 719.02 mi (1,157.16 km) |
| Portishead to Colle di Val d'Elsa | 854.01 mi (1,374.40 km) |
| Portishead to Colle Salvetti | 821.42 mi (1,321.95 km) |
| Portishead to Collecchio | 756.39 mi (1,217.29 km) |
| Portishead to Colleferro | 1,003.53 mi (1,615.02 km) |
