| Port Neches to Montgomeryville (Pennsylvania) | 1,269.18 mi (2,042.55 km) |
| Port Neches to Monticello (Minnesota) | 1,058.72 mi (1,703.84 km) |
| Port Neches to Montrose (Colorado) | 986.08 mi (1,586.94 km) |
| Port Neches to Moody (Alabama) | 503.82 mi (810.82 km) |
| Port Neches to Moore (Oklahoma) | 422.94 mi (680.65 km) |
| Port Neches to Moorestown-Lenola (New Jersey) | 1,273.04 mi (2,048.75 km) |
| Port Neches to Mooresville (North Carolina) | 853.91 mi (1,374.23 km) |
| Port Neches to Moorhead (Minnesota) | 1,176.64 mi (1,893.62 km) |
| Port Neches to Moorpark (California) | 1,484.83 mi (2,389.60 km) |
| Port Neches to Moraga (California) | 1,696.94 mi (2,730.97 km) |
| Port Neches to Moreno Valley (California) | 1,387.40 mi (2,232.81 km) |
| Port Neches to Morgan City (Louisiana) | 166.11 mi (267.33 km) |
| Port Neches to Morgan Hill (California) | 1,662.70 mi (2,675.86 km) |
| Port Neches to Morganton (North Carolina) | 813.78 mi (1,309.65 km) |
| Port Neches to Morgantown (West Virginia) | 1,035.23 mi (1,666.05 km) |
