| Port Neches to Chivasso | 5,302.53 mi (8,533.60 km) |
| Port Neches to Ciampino | 5,625.82 mi (9,053.88 km) |
| Port Neches to Cicciano | 5,741.17 mi (9,239.51 km) |
| Port Neches to Cingoli | 5,593.22 mi (9,001.42 km) |
| Port Neches to Cinisello Balsamo | 5,346.20 mi (8,603.88 km) |
| Port Neches to Cinisi | 5,785.57 mi (9,310.98 km) |
| Port Neches to Cirie | 5,288.86 mi (8,511.59 km) |
| Port Neches to Ciro Marina | 5,916.66 mi (9,521.95 km) |
| Port Neches to Cislago | 5,332.28 mi (8,581.47 km) |
| Port Neches to Cisterna di Latina | 5,643.57 mi (9,082.44 km) |
| Port Neches to Cisternino | 5,874.51 mi (9,454.11 km) |
| Port Neches to Citta di Castello | 5,548.64 mi (8,929.68 km) |
| Port Neches to Citta Sant'Angelo | 5,660.73 mi (9,110.06 km) |
| Port Neches to Cittadella | 5,448.99 mi (8,769.31 km) |
| Port Neches to Cittanova | 5,911.91 mi (9,514.30 km) |
