| Castelo Branco to Melzo | 942.56 mi (1,516.91 km) |
| Castelo Branco to Mendicino | 1,259.41 mi (2,026.83 km) |
| Castelo Branco to Menfi | 1,111.54 mi (1,788.86 km) |
| Castelo Branco to Mentana | 1,060.46 mi (1,706.64 km) |
| Castelo Branco to Merano | 1,048.18 mi (1,686.88 km) |
| Castelo Branco to Merate | 947.82 mi (1,525.37 km) |
| Castelo Branco to Mercato San Severino | 1,172.10 mi (1,886.31 km) |
| Castelo Branco to Mercogliano | 1,170.21 mi (1,883.27 km) |
| Castelo Branco to Mesagne | 1,331.74 mi (2,143.23 km) |
| Castelo Branco to Messina | 1,239.44 mi (1,994.69 km) |
| Castelo Branco to Mestre | 1,073.40 mi (1,727.48 km) |
| Castelo Branco to Mestrino | 1,050.60 mi (1,690.77 km) |
| Castelo Branco to Milan | 931.43 mi (1,498.99 km) |
| Castelo Branco to Milazzo | 1,222.27 mi (1,967.06 km) |
| Castelo Branco to Minerbio | 1,023.06 mi (1,646.46 km) |
