| Port Neches to Cortona | 5,544.65 mi (8,923.24 km) |
| Port Neches to Cosenza | 5,881.30 mi (9,465.04 km) |
| Port Neches to Cossato | 5,301.57 mi (8,532.05 km) |
| Port Neches to Costa Volpino | 5,373.10 mi (8,647.16 km) |
| Port Neches to Creazzo | 5,440.90 mi (8,756.27 km) |
| Port Neches to Crema | 5,372.11 mi (8,645.58 km) |
| Port Neches to Cremona | 5,394.98 mi (8,682.38 km) |
| Port Neches to Crevalcore | 5,456.62 mi (8,781.58 km) |
| Port Neches to Crispiano | 5,871.42 mi (9,449.13 km) |
| Port Neches to Crosia | 5,893.07 mi (9,483.98 km) |
| Port Neches to Crotone | 5,927.76 mi (9,539.81 km) |
| Port Neches to Cuneo | 5,315.52 mi (8,554.50 km) |
| Port Neches to Cuorgne | 5,285.75 mi (8,506.59 km) |
| Port Neches to Cusano Milanino | 5,344.80 mi (8,601.63 km) |
| Port Neches to Cutro | 5,923.96 mi (9,533.70 km) |
