| Port Neches to Castelfidardo | 5,603.38 mi (9,017.77 km) |
| Port Neches to Castelfiorentino | 5,489.31 mi (8,834.19 km) |
| Port Neches to Castelfranco di Sopra | 5,513.60 mi (8,873.28 km) |
| Port Neches to Castelfranco di Sotto | 5,476.46 mi (8,813.51 km) |
| Port Neches to Castelfranco Emilia | 5,456.89 mi (8,782.01 km) |
| Port Neches to Castelfranco Veneto | 5,454.54 mi (8,778.23 km) |
| Port Neches to Castellabate | 5,786.12 mi (9,311.87 km) |
| Port Neches to Castellammare del Golfo | 5,780.98 mi (9,303.58 km) |
| Port Neches to Castellammare di Stabia | 5,749.42 mi (9,252.80 km) |
| Port Neches to Castellamonte | 5,288.64 mi (8,511.25 km) |
| Port Neches to Castellana Grotte | 5,857.14 mi (9,426.16 km) |
| Port Neches to Castellaneta | 5,857.30 mi (9,426.41 km) |
| Port Neches to Castellanza | 5,330.64 mi (8,578.83 km) |
| Port Neches to Castellarano | 5,446.65 mi (8,765.54 km) |
| Port Neches to Castelleone | 5,377.85 mi (8,654.81 km) |
