| Port Neches to Cividale del Friuli | 5,499.46 mi (8,850.53 km) |
| Port Neches to Civita Castellana | 5,599.06 mi (9,010.81 km) |
| Port Neches to Civitanova Marche | 5,617.47 mi (9,040.44 km) |
| Port Neches to Civitavecchia | 5,580.02 mi (8,980.18 km) |
| Port Neches to Civitella in Val di Chiana | 5,527.91 mi (8,896.31 km) |
| Port Neches to Clusone | 5,365.06 mi (8,634.24 km) |
| Port Neches to Coccaglio | 5,377.50 mi (8,654.26 km) |
| Port Neches to Codigoro | 5,492.64 mi (8,839.55 km) |
| Port Neches to Codogno | 5,380.28 mi (8,658.72 km) |
| Port Neches to Codroipo | 5,486.25 mi (8,829.27 km) |
| Port Neches to Cogoleto | 5,362.32 mi (8,629.81 km) |
| Port Neches to Colle di Val d'Elsa | 5,503.67 mi (8,857.30 km) |
| Port Neches to Colle Salvetti | 5,468.68 mi (8,800.99 km) |
| Port Neches to Collecchio | 5,416.27 mi (8,716.65 km) |
| Port Neches to Colleferro | 5,646.34 mi (9,086.90 km) |
