| Barcelos to Melzo | 942.32 mi (1,516.51 km) |
| Barcelos to Mendicino | 1,310.39 mi (2,108.86 km) |
| Barcelos to Menfi | 1,177.69 mi (1,895.32 km) |
| Barcelos to Mentana | 1,093.68 mi (1,760.12 km) |
| Barcelos to Merano | 1,040.53 mi (1,674.57 km) |
| Barcelos to Merate | 945.73 mi (1,522.01 km) |
| Barcelos to Mercato San Severino | 1,213.90 mi (1,953.58 km) |
| Barcelos to Mercogliano | 1,211.01 mi (1,948.93 km) |
| Barcelos to Mesagne | 1,372.84 mi (2,209.37 km) |
| Barcelos to Messina | 1,298.01 mi (2,088.94 km) |
| Barcelos to Mestre | 1,077.20 mi (1,733.59 km) |
| Barcelos to Mestrino | 1,054.19 mi (1,696.55 km) |
| Barcelos to Milan | 931.10 mi (1,498.46 km) |
| Barcelos to Milazzo | 1,281.12 mi (2,061.76 km) |
| Barcelos to Minerbio | 1,033.55 mi (1,663.35 km) |
