| National City to Mattoon (Illinois) | 1,664.37 mi (2,678.54 km) |
| National City to Mauldin (South Carolina) | 1,994.95 mi (3,210.56 km) |
| National City to Maumee (Ohio) | 1,928.07 mi (3,102.93 km) |
| National City to Maumelle (Arkansas) | 1,423.15 mi (2,290.34 km) |
| National City to Mayagüez (Puerto Rico) | 3,241.57 mi (5,216.80 km) |
| National City to Mayfield Heights (Ohio) | 2,041.16 mi (3,284.93 km) |
| National City to Mays Chapel (Maryland) | 2,287.56 mi (3,681.48 km) |
| National City to Maywood (California) | 110.97 mi (178.58 km) |
| National City to Maywood (Illinois) | 1,719.37 mi (2,767.05 km) |
| National City to McAlester (Oklahoma) | 1,231.99 mi (1,982.69 km) |
| National City to McAllen (Texas) | 1,216.18 mi (1,957.24 km) |
| National City to McCalla (Alabama) | 1,737.16 mi (2,795.69 km) |
| National City to McComb (Mississippi) | 1,559.96 mi (2,510.51 km) |
| National City to McDonough (Georgia) | 1,900.80 mi (3,059.04 km) |
| National City to McFarland (California) | 241.51 mi (388.68 km) |
