| Port Washington to Cividale del Friuli | 4,156.86 mi (6,689.82 km) |
| Port Washington to Civita Castellana | 4,244.70 mi (6,831.19 km) |
| Port Washington to Civitanova Marche | 4,266.79 mi (6,866.73 km) |
| Port Washington to Civitavecchia | 4,224.74 mi (6,799.06 km) |
| Port Washington to Civitella in Val di Chiana | 4,175.32 mi (6,719.53 km) |
| Port Washington to Clusone | 4,017.14 mi (6,464.96 km) |
| Port Washington to Coccaglio | 4,028.66 mi (6,483.49 km) |
| Port Washington to Codigoro | 4,144.20 mi (6,669.45 km) |
| Port Washington to Codogno | 4,029.98 mi (6,485.63 km) |
| Port Washington to Codroipo | 4,142.52 mi (6,666.74 km) |
| Port Washington to Cogoleto | 4,009.02 mi (6,451.89 km) |
| Port Washington to Colle di Val d'Elsa | 4,150.46 mi (6,679.52 km) |
| Port Washington to Colle Salvetti | 4,115.30 mi (6,622.93 km) |
| Port Washington to Collecchio | 4,065.42 mi (6,542.67 km) |
| Port Washington to Colleferro | 4,291.43 mi (6,906.38 km) |
