| Castagneto Carducci to McKeesport (Pennsylvania) | 4,421.15 mi (7,115.16 km) |
| Castagneto Carducci to McKinleyville (California) | 5,976.88 mi (9,618.86 km) |
| Castagneto Carducci to McKinney (Texas) | 5,447.65 mi (8,767.15 km) |
| Castagneto Carducci to McLean (Virginia) | 4,362.42 mi (7,020.63 km) |
| Castagneto Carducci to McMinnville (Oregon) | 5,702.58 mi (9,177.41 km) |
| Castagneto Carducci to McMinnville (Tennessee) | 4,873.46 mi (7,843.07 km) |
| Castagneto Carducci to McNair (Virginia) | 4,371.64 mi (7,035.48 km) |
| Castagneto Carducci to McPherson (Kansas) | 5,236.49 mi (8,427.31 km) |
| Castagneto Carducci to Mead Valley (California) | 6,183.32 mi (9,951.09 km) |
| Castagneto Carducci to Meadow Woods (Florida) | 4,998.63 mi (8,044.51 km) |
| Castagneto Carducci to Meadowbrook (Virginia) | 4,435.61 mi (7,138.43 km) |
| Castagneto Carducci to Meadville (Pennsylvania) | 4,381.54 mi (7,051.40 km) |
| Castagneto Carducci to Mebane (North Carolina) | 4,570.97 mi (7,356.26 km) |
| Castagneto Carducci to Mechanicsville (Virginia) | 4,422.44 mi (7,117.22 km) |
| Castagneto Carducci to Medford (Massachusetts) | 3,964.16 mi (6,379.70 km) |
