| Potomac to Moncalieri | 4,172.17 mi (6,714.47 km) |
| Potomac to Mondolfo | 4,448.09 mi (7,158.50 km) |
| Potomac to Mondovi | 4,197.49 mi (6,755.20 km) |
| Potomac to Monesiglio | 4,207.95 mi (6,772.04 km) |
| Potomac to Monfalcone | 4,395.26 mi (7,073.49 km) |
| Potomac to Monopoli | 4,732.48 mi (7,616.20 km) |
| Potomac to Monreale | 4,661.95 mi (7,502.68 km) |
| Potomac to Monselice | 4,339.40 mi (6,983.58 km) |
| Potomac to Monserrato | 4,429.50 mi (7,128.60 km) |
| Potomac to Monsummano | 4,345.35 mi (6,993.17 km) |
| Potomac to Montagnana | 4,327.31 mi (6,964.13 km) |
| Potomac to Montale | 4,351.78 mi (7,003.52 km) |
| Potomac to Montalto di Castro | 4,431.71 mi (7,132.15 km) |
| Potomac to Montalto Uffugo | 4,741.21 mi (7,630.24 km) |
| Potomac to Monte Compatri | 4,500.97 mi (7,243.62 km) |
