| Potomac to Mozzate | 4,205.18 mi (6,767.58 km) |
| Potomac to Muggia | 4,411.92 mi (7,100.30 km) |
| Potomac to Muggio | 4,219.97 mi (6,791.39 km) |
| Potomac to Mugnano di Napoli | 4,598.56 mi (7,400.66 km) |
| Potomac to Musile di Piave | 4,360.88 mi (7,018.16 km) |
| Potomac to Mussomeli | 4,702.05 mi (7,567.21 km) |
| Potomac to Naples | 4,603.14 mi (7,408.03 km) |
| Potomac to Nardo | 4,794.13 mi (7,715.41 km) |
| Potomac to Narni | 4,466.14 mi (7,187.56 km) |
| Potomac to Nembro | 4,237.83 mi (6,820.13 km) |
| Potomac to Nepi | 4,468.31 mi (7,191.04 km) |
| Potomac to Nerviano | 4,210.85 mi (6,776.71 km) |
| Potomac to Nettuno | 4,510.06 mi (7,258.23 km) |
| Potomac to Nichelino | 4,170.67 mi (6,712.04 km) |
| Potomac to Nicosia | 4,725.21 mi (7,604.50 km) |
