| Port Lavaca to McHenry (Illinois) | 1,056.33 mi (1,699.99 km) |
| Port Lavaca to McKeesport (Pennsylvania) | 1,249.04 mi (2,010.14 km) |
| Port Lavaca to McKinleyville (California) | 1,765.04 mi (2,840.55 km) |
| Port Lavaca to McKinney (Texas) | 316.70 mi (509.68 km) |
| Port Lavaca to McLean (Virginia) | 1,320.18 mi (2,124.62 km) |
| Port Lavaca to McMinnville (Oregon) | 1,847.41 mi (2,973.12 km) |
| Port Lavaca to McMinnville (Tennessee) | 799.77 mi (1,287.10 km) |
| Port Lavaca to McNair (Virginia) | 1,310.02 mi (2,108.28 km) |
| Port Lavaca to McPherson (Kansas) | 676.49 mi (1,088.71 km) |
| Port Lavaca to Mead Valley (California) | 1,270.03 mi (2,043.91 km) |
| Port Lavaca to Meadow Woods (Florida) | 927.46 mi (1,492.60 km) |
| Port Lavaca to Meadowbrook (Virginia) | 1,262.12 mi (2,031.19 km) |
| Port Lavaca to Meadville (Pennsylvania) | 1,290.89 mi (2,077.49 km) |
| Port Lavaca to Mebane (North Carolina) | 1,134.36 mi (1,825.57 km) |
| Port Lavaca to Mechanicsville (Virginia) | 1,273.44 mi (2,049.40 km) |
