| Piedras Blancas to Mauldin (South Carolina) | 3,989.29 mi (6,420.14 km) |
| Piedras Blancas to Maumee (Ohio) | 3,803.61 mi (6,121.32 km) |
| Piedras Blancas to Maumelle (Arkansas) | 4,454.84 mi (7,169.38 km) |
| Piedras Blancas to Mayagüez (Puerto Rico) | 3,925.94 mi (6,318.19 km) |
| Piedras Blancas to Mayfield Heights (Ohio) | 3,706.26 mi (5,964.65 km) |
| Piedras Blancas to Mays Chapel (Maryland) | 3,556.20 mi (5,723.15 km) |
| Piedras Blancas to Maywood (California) | 5,589.90 mi (8,996.07 km) |
| Piedras Blancas to Maywood (Illinois) | 3,977.32 mi (6,400.88 km) |
| Piedras Blancas to McAlester (Oklahoma) | 4,603.86 mi (7,409.19 km) |
| Piedras Blancas to McAllen (Texas) | 5,100.02 mi (8,207.69 km) |
| Piedras Blancas to McCalla (Alabama) | 4,270.01 mi (6,871.91 km) |
| Piedras Blancas to McComb (Mississippi) | 4,516.17 mi (7,268.07 km) |
| Piedras Blancas to McDonough (Georgia) | 4,128.83 mi (6,644.71 km) |
| Piedras Blancas to McFarland (California) | 5,544.51 mi (8,923.03 km) |
| Piedras Blancas to McHenry (Illinois) | 3,980.20 mi (6,405.51 km) |
