| Santander to Massarosa | 706.34 mi (1,136.75 km) |
| Santander to Matelica | 843.36 mi (1,357.26 km) |
| Santander to Matera | 1,061.53 mi (1,708.36 km) |
| Santander to Matino | 1,151.88 mi (1,853.77 km) |
| Santander to Mazzarino | 1,036.08 mi (1,667.41 km) |
| Santander to Meda | 655.65 mi (1,055.16 km) |
| Santander to Medesano | 696.33 mi (1,120.64 km) |
| Santander to Medicina | 769.73 mi (1,238.76 km) |
| Santander to Meldola | 790.82 mi (1,272.71 km) |
| Santander to Melegnano | 660.30 mi (1,062.65 km) |
| Santander to Melendugno | 1,156.72 mi (1,861.57 km) |
| Santander to Melfi | 1,007.34 mi (1,621.16 km) |
| Santander to Melilli | 1,083.88 mi (1,744.34 km) |
| Santander to Melito di Napoli | 938.08 mi (1,509.70 km) |
| Santander to Melito di Porto Salvo | 1,092.23 mi (1,757.77 km) |
