| Port Neches to Morris (Illinois) | 845.72 mi (1,361.05 km) |
| Port Neches to Morristown (New Jersey) | 1,322.37 mi (2,128.14 km) |
| Port Neches to Morristown (Tennessee) | 750.83 mi (1,208.35 km) |
| Port Neches to Morrisville (North Carolina) | 964.09 mi (1,551.56 km) |
| Port Neches to Morro Bay (California) | 1,603.00 mi (2,579.77 km) |
| Port Neches to Morton (Illinois) | 776.84 mi (1,250.20 km) |
| Port Neches to Morton Grove (Illinois) | 901.24 mi (1,450.41 km) |
| Port Neches to Moscow (Idaho) | 1,691.11 mi (2,721.58 km) |
| Port Neches to Moses Lake (Washington) | 1,795.76 mi (2,890.00 km) |
| Port Neches to Moss Bluff (Louisiana) | 49.71 mi (80.00 km) |
| Port Neches to Moss Point (Mississippi) | 324.92 mi (522.91 km) |
| Port Neches to Moultrie (Georgia) | 610.59 mi (982.65 km) |
| Port Neches to Mounds View (Minnesota) | 1,046.19 mi (1,683.68 km) |
| Port Neches to Mount Airy (North Carolina) | 891.51 mi (1,434.75 km) |
| Port Neches to Mount Clemens (Michigan) | 1,065.69 mi (1,715.06 km) |
