| North Potomac to Melzo | 4,229.50 mi (6,806.71 km) |
| North Potomac to Mendicino | 4,747.21 mi (7,639.90 km) |
| North Potomac to Menfi | 4,664.05 mi (7,506.06 km) |
| North Potomac to Mentana | 4,488.37 mi (7,223.34 km) |
| North Potomac to Merano | 4,265.18 mi (6,864.15 km) |
| North Potomac to Merate | 4,223.75 mi (6,797.48 km) |
| North Potomac to Mercato San Severino | 4,626.51 mi (7,445.65 km) |
| North Potomac to Mercogliano | 4,620.27 mi (7,435.60 km) |
| North Potomac to Mesagne | 4,767.54 mi (7,672.62 km) |
| North Potomac to Messina | 4,759.60 mi (7,659.83 km) |
| North Potomac to Mestre | 4,349.75 mi (7,000.24 km) |
| North Potomac to Mestrino | 4,331.19 mi (6,970.38 km) |
| North Potomac to Milan | 4,220.85 mi (6,792.80 km) |
| North Potomac to Milazzo | 4,744.38 mi (7,635.33 km) |
| North Potomac to Minerbio | 4,346.74 mi (6,995.40 km) |
