| Piedras Blancas to McKeesport (Pennsylvania) | 3,673.11 mi (5,911.30 km) |
| Piedras Blancas to McKinleyville (California) | 5,446.49 mi (8,765.27 km) |
| Piedras Blancas to McKinney (Texas) | 4,717.84 mi (7,592.62 km) |
| Piedras Blancas to McLean (Virginia) | 3,598.14 mi (5,790.65 km) |
| Piedras Blancas to McMinnville (Oregon) | 5,195.24 mi (8,360.93 km) |
| Piedras Blancas to McMinnville (Tennessee) | 4,117.34 mi (6,626.22 km) |
| Piedras Blancas to McNair (Virginia) | 3,608.03 mi (5,806.56 km) |
| Piedras Blancas to McPherson (Kansas) | 4,541.35 mi (7,308.60 km) |
| Piedras Blancas to Mead Valley (California) | 5,562.45 mi (8,951.90 km) |
| Piedras Blancas to Meadow Woods (Florida) | 4,198.06 mi (6,756.12 km) |
| Piedras Blancas to Meadowbrook (Virginia) | 3,663.76 mi (5,896.25 km) |
| Piedras Blancas to Meadville (Pennsylvania) | 3,642.89 mi (5,862.66 km) |
| Piedras Blancas to Mebane (North Carolina) | 3,797.18 mi (6,110.96 km) |
| Piedras Blancas to Mechanicsville (Virginia) | 3,651.30 mi (5,876.20 km) |
| Piedras Blancas to Medford (Massachusetts) | 3,204.81 mi (5,157.64 km) |
