| Santander to Melzo | 665.98 mi (1,071.80 km) |
| Santander to Mendicino | 1,073.98 mi (1,728.40 km) |
| Santander to Menfi | 966.93 mi (1,556.13 km) |
| Santander to Mentana | 839.57 mi (1,351.16 km) |
| Santander to Merano | 761.77 mi (1,225.95 km) |
| Santander to Merate | 668.72 mi (1,076.19 km) |
| Santander to Mercato San Severino | 967.44 mi (1,556.94 km) |
| Santander to Mercogliano | 963.43 mi (1,550.50 km) |
| Santander to Mesagne | 1,123.67 mi (1,808.37 km) |
| Santander to Messina | 1,072.57 mi (1,726.13 km) |
| Santander to Mestre | 801.84 mi (1,290.43 km) |
| Santander to Mestrino | 778.84 mi (1,253.43 km) |
| Santander to Milan | 654.80 mi (1,053.79 km) |
| Santander to Milazzo | 1,056.38 mi (1,700.09 km) |
| Santander to Minerbio | 761.81 mi (1,226.02 km) |
