| Port Lavaca to Mattoon (Illinois) | 886.09 mi (1,426.02 km) |
| Port Lavaca to Mauldin (South Carolina) | 942.33 mi (1,516.53 km) |
| Port Lavaca to Maumee (Ohio) | 1,153.89 mi (1,857.01 km) |
| Port Lavaca to Maumelle (Arkansas) | 497.11 mi (800.02 km) |
| Port Lavaca to Mayagüez (Puerto Rico) | 1,996.60 mi (3,213.22 km) |
| Port Lavaca to Mayfield Heights (Ohio) | 1,233.51 mi (1,985.15 km) |
| Port Lavaca to Mays Chapel (Maryland) | 1,361.47 mi (2,191.07 km) |
| Port Lavaca to Maywood (California) | 1,322.87 mi (2,128.95 km) |
| Port Lavaca to Maywood (Illinois) | 1,040.35 mi (1,674.28 km) |
| Port Lavaca to McAlester (Oklahoma) | 438.69 mi (706.00 km) |
| Port Lavaca to McAllen (Texas) | 192.85 mi (310.36 km) |
| Port Lavaca to McCalla (Alabama) | 653.86 mi (1,052.29 km) |
| Port Lavaca to McComb (Mississippi) | 410.76 mi (661.05 km) |
| Port Lavaca to McDonough (Georgia) | 809.61 mi (1,302.94 km) |
| Port Lavaca to McFarland (California) | 1,405.92 mi (2,262.61 km) |
