| Potomac to Melun | 3,853.93 mi (6,202.31 km) |
| Potomac to Mende | 4,002.58 mi (6,441.53 km) |
| Potomac to Mennecy | 3,843.81 mi (6,186.02 km) |
| Potomac to Menton | 4,202.99 mi (6,764.06 km) |
| Potomac to Mericourt | 3,814.74 mi (6,139.23 km) |
| Potomac to Merignac | 3,807.64 mi (6,127.81 km) |
| Potomac to Meru | 3,813.85 mi (6,137.80 km) |
| Potomac to Merville | 3,799.48 mi (6,114.67 km) |
| Potomac to Mery-sur-Oise | 3,820.40 mi (6,148.34 km) |
| Potomac to Metz | 3,985.25 mi (6,413.64 km) |
| Potomac to Meudon | 3,829.04 mi (6,162.24 km) |
| Potomac to Meylan | 4,082.63 mi (6,570.35 km) |
| Potomac to Meyzieu | 4,032.06 mi (6,488.98 km) |
| Potomac to Meze | 4,039.79 mi (6,501.41 km) |
| Potomac to Millau | 3,996.04 mi (6,431.01 km) |
