| North Potomac to Montevarchi | 4,388.18 mi (7,062.09 km) |
| North Potomac to Monticello Conte Otto | 4,318.40 mi (6,949.79 km) |
| North Potomac to Montichiari | 4,273.89 mi (6,878.17 km) |
| North Potomac to Montignoso | 4,310.63 mi (6,937.29 km) |
| North Potomac to Montopoli in Val d'Arno | 4,347.80 mi (6,997.11 km) |
| North Potomac to Monza | 4,220.68 mi (6,792.52 km) |
| North Potomac to Morbegno | 4,215.51 mi (6,784.21 km) |
| North Potomac to Mori | 4,284.72 mi (6,895.58 km) |
| North Potomac to Morlupo | 4,477.47 mi (7,205.80 km) |
| North Potomac to Morrovalle | 4,482.69 mi (7,214.20 km) |
| North Potomac to Mortara | 4,208.90 mi (6,773.57 km) |
| North Potomac to Mosciano Sant'Angelo | 4,515.93 mi (7,267.69 km) |
| North Potomac to Motta di Livenza | 4,355.53 mi (7,009.54 km) |
| North Potomac to Motta Sant'Anastasia | 4,759.60 mi (7,659.84 km) |
| North Potomac to Mottola | 4,731.59 mi (7,614.76 km) |
