| Port Neches to Castelletto sopra Ticino | 5,316.03 mi (8,555.32 km) |
| Port Neches to Castelli Calepio | 5,371.78 mi (8,645.05 km) |
| Port Neches to Castelnovo ne' Monti | 5,435.28 mi (8,747.25 km) |
| Port Neches to Castelnuovo Berardenga | 5,521.42 mi (8,885.86 km) |
| Port Neches to Castelnuovo di Porto | 5,609.02 mi (9,026.84 km) |
| Port Neches to Castelnuovo di Verona | 5,414.87 mi (8,714.39 km) |
| Port Neches to Castelnuovo Rangone | 5,453.56 mi (8,776.65 km) |
| Port Neches to Castelvetrano | 5,790.06 mi (9,318.21 km) |
| Port Neches to Castelvetro di Modena | 5,456.06 mi (8,780.68 km) |
| Port Neches to Castenaso | 5,477.55 mi (8,815.27 km) |
| Port Neches to Castenedolo | 5,394.03 mi (8,680.86 km) |
| Port Neches to Castiglion Fiorentino | 5,539.18 mi (8,914.45 km) |
| Port Neches to Castiglione del Lago | 5,552.25 mi (8,935.48 km) |
| Port Neches to Castiglione delle Stiviere | 5,404.99 mi (8,698.49 km) |
| Port Neches to Castrolibero | 5,878.45 mi (9,460.46 km) |
