| Piacenza to McKeesport (Pennsylvania) | 4,315.30 mi (6,944.80 km) |
| Piacenza to McKinleyville (California) | 5,843.36 mi (9,403.98 km) |
| Piacenza to McKinney (Texas) | 5,336.40 mi (8,588.10 km) |
| Piacenza to McLean (Virginia) | 4,260.70 mi (6,856.93 km) |
| Piacenza to McMinnville (Oregon) | 5,568.14 mi (8,961.06 km) |
| Piacenza to McMinnville (Tennessee) | 4,768.84 mi (7,674.70 km) |
| Piacenza to McNair (Virginia) | 4,269.73 mi (6,871.46 km) |
| Piacenza to McPherson (Kansas) | 5,119.43 mi (8,238.92 km) |
| Piacenza to Mead Valley (California) | 6,056.09 mi (9,746.33 km) |
| Piacenza to Meadow Woods (Florida) | 4,908.31 mi (7,899.16 km) |
| Piacenza to Meadowbrook (Virginia) | 4,335.89 mi (6,977.94 km) |
| Piacenza to Meadville (Pennsylvania) | 4,273.66 mi (6,877.80 km) |
| Piacenza to Mebane (North Carolina) | 4,471.61 mi (7,196.36 km) |
| Piacenza to Mechanicsville (Virginia) | 4,322.53 mi (6,956.43 km) |
| Piacenza to Medford (Massachusetts) | 3,861.85 mi (6,215.05 km) |
