| Seal Beach to Mattoon (Illinois) | 1,686.12 mi (2,713.56 km) |
| Seal Beach to Mauldin (South Carolina) | 2,032.74 mi (3,271.38 km) |
| Seal Beach to Maumee (Ohio) | 1,943.61 mi (3,127.94 km) |
| Seal Beach to Maumelle (Arkansas) | 1,463.18 mi (2,354.77 km) |
| Seal Beach to Mayagüez (Puerto Rico) | 3,304.72 mi (5,318.43 km) |
| Seal Beach to Mayfield Heights (Ohio) | 2,057.39 mi (3,311.05 km) |
| Seal Beach to Mays Chapel (Maryland) | 2,310.39 mi (3,718.22 km) |
| Seal Beach to Maywood (California) | 17.52 mi (28.19 km) |
| Seal Beach to Maywood (Illinois) | 1,732.14 mi (2,787.61 km) |
| Seal Beach to McAlester (Oklahoma) | 1,272.06 mi (2,047.18 km) |
| Seal Beach to McAllen (Texas) | 1,292.47 mi (2,080.03 km) |
| Seal Beach to McCalla (Alabama) | 1,781.34 mi (2,866.80 km) |
| Seal Beach to McComb (Mississippi) | 1,612.83 mi (2,595.60 km) |
| Seal Beach to McDonough (Georgia) | 1,943.37 mi (3,127.56 km) |
| Seal Beach to McFarland (California) | 148.61 mi (239.16 km) |
