| Barreiro to Melzo | 1,055.50 mi (1,698.66 km) |
| Barreiro to Mendicino | 1,353.31 mi (2,177.93 km) |
| Barreiro to Menfi | 1,196.84 mi (1,926.13 km) |
| Barreiro to Mentana | 1,163.51 mi (1,872.49 km) |
| Barreiro to Merano | 1,162.10 mi (1,870.22 km) |
| Barreiro to Merate | 1,061.06 mi (1,707.60 km) |
| Barreiro to Mercato San Severino | 1,270.99 mi (2,045.46 km) |
| Barreiro to Mercogliano | 1,269.57 mi (2,043.18 km) |
| Barreiro to Mesagne | 1,430.41 mi (2,302.02 km) |
| Barreiro to Messina | 1,329.00 mi (2,138.82 km) |
| Barreiro to Mestre | 1,185.30 mi (1,907.55 km) |
| Barreiro to Mestrino | 1,162.58 mi (1,870.99 km) |
| Barreiro to Milan | 1,044.40 mi (1,680.80 km) |
| Barreiro to Milazzo | 1,311.74 mi (2,111.04 km) |
| Barreiro to Minerbio | 1,133.54 mi (1,824.26 km) |
