| Port Neches to Maryland Heights (Missouri) | 635.52 mi (1,022.77 km) |
| Port Neches to Marysville (California) | 1,687.07 mi (2,715.08 km) |
| Port Neches to Marysville (Ohio) | 925.79 mi (1,489.91 km) |
| Port Neches to Marysville (Washington) | 1,944.67 mi (3,129.64 km) |
| Port Neches to Maryville (Missouri) | 718.13 mi (1,155.72 km) |
| Port Neches to Maryville (Tennessee) | 701.91 mi (1,129.62 km) |
| Port Neches to Mason (Ohio) | 847.67 mi (1,364.19 km) |
| Port Neches to Mason City (Iowa) | 911.04 mi (1,466.18 km) |
| Port Neches to Massapequa (New York) | 1,365.11 mi (2,196.93 km) |
| Port Neches to Massapequa Park (New York) | 1,366.53 mi (2,199.21 km) |
| Port Neches to Massillon (Ohio) | 1,021.20 mi (1,643.46 km) |
| Port Neches to Mastic (New York) | 1,398.71 mi (2,251.01 km) |
| Port Neches to Mastic Beach (New York) | 1,397.94 mi (2,249.76 km) |
| Port Neches to Matteson (Illinois) | 868.76 mi (1,398.13 km) |
| Port Neches to Matthews (North Carolina) | 847.86 mi (1,364.50 km) |
