| Port Neches to Montevarchi | 5,517.57 mi (8,879.68 km) |
| Port Neches to Monticello Conte Otto | 5,442.59 mi (8,759.01 km) |
| Port Neches to Montichiari | 5,399.91 mi (8,690.32 km) |
| Port Neches to Montignoso | 5,440.26 mi (8,755.26 km) |
| Port Neches to Montopoli in Val d'Arno | 5,477.66 mi (8,815.44 km) |
| Port Neches to Monza | 5,347.41 mi (8,605.83 km) |
| Port Neches to Morbegno | 5,340.45 mi (8,594.63 km) |
| Port Neches to Mori | 5,408.89 mi (8,704.77 km) |
| Port Neches to Morlupo | 5,608.84 mi (9,026.55 km) |
| Port Neches to Morrovalle | 5,610.53 mi (9,029.28 km) |
| Port Neches to Mortara | 5,336.99 mi (8,589.06 km) |
| Port Neches to Mosciano Sant'Angelo | 5,644.75 mi (9,084.34 km) |
| Port Neches to Motta di Livenza | 5,477.98 mi (8,815.95 km) |
| Port Neches to Motta Sant'Anastasia | 5,895.73 mi (9,488.26 km) |
| Port Neches to Mottola | 5,861.56 mi (9,433.27 km) |
