| Port Royal to Cividale del Friuli | 4,830.84 mi (7,774.48 km) |
| Port Royal to Civita Castellana | 4,902.89 mi (7,890.44 km) |
| Port Royal to Civitanova Marche | 4,931.09 mi (7,935.82 km) |
| Port Royal to Civitavecchia | 4,881.08 mi (7,855.34 km) |
| Port Royal to Civitella in Val di Chiana | 4,836.95 mi (7,784.32 km) |
| Port Royal to Clusone | 4,685.93 mi (7,541.27 km) |
| Port Royal to Coccaglio | 4,696.26 mi (7,557.89 km) |
| Port Royal to Codigoro | 4,811.93 mi (7,744.05 km) |
| Port Royal to Codogno | 4,695.64 mi (7,556.90 km) |
| Port Royal to Codroipo | 4,815.46 mi (7,749.73 km) |
| Port Royal to Cogoleto | 4,670.03 mi (7,515.68 km) |
| Port Royal to Colle di Val d'Elsa | 4,811.12 mi (7,742.75 km) |
| Port Royal to Colle Salvetti | 4,775.77 mi (7,685.86 km) |
| Port Royal to Collecchio | 4,730.17 mi (7,612.47 km) |
| Port Royal to Colleferro | 4,948.33 mi (7,963.56 km) |
