| Signal Hill to Mattoon (Illinois) | 1,690.00 mi (2,719.79 km) |
| Signal Hill to Mauldin (South Carolina) | 2,037.45 mi (3,278.96 km) |
| Signal Hill to Maumee (Ohio) | 1,947.10 mi (3,133.56 km) |
| Signal Hill to Maumelle (Arkansas) | 1,468.05 mi (2,362.60 km) |
| Signal Hill to Mayagüez (Puerto Rico) | 3,310.58 mi (5,327.86 km) |
| Signal Hill to Mayfield Heights (Ohio) | 2,060.91 mi (3,316.72 km) |
| Signal Hill to Mays Chapel (Maryland) | 2,314.28 mi (3,724.48 km) |
| Signal Hill to Maywood (California) | 12.87 mi (20.72 km) |
| Signal Hill to Maywood (Illinois) | 1,735.49 mi (2,793.00 km) |
| Signal Hill to McAlester (Oklahoma) | 1,276.95 mi (2,055.06 km) |
| Signal Hill to McAllen (Texas) | 1,298.80 mi (2,090.22 km) |
| Signal Hill to McCalla (Alabama) | 1,786.40 mi (2,874.93 km) |
| Signal Hill to McComb (Mississippi) | 1,618.30 mi (2,604.40 km) |
| Signal Hill to McDonough (Georgia) | 1,948.34 mi (3,135.55 km) |
| Signal Hill to McFarland (California) | 143.17 mi (230.41 km) |
