| Santander to Mombris | 763.16 mi (1,228.19 km) |
| Santander to Monchengladbach | 716.75 mi (1,153.50 km) |
| Santander to Monschau | 680.85 mi (1,095.72 km) |
| Santander to Montabaur | 728.67 mi (1,172.68 km) |
| Santander to Moosburg | 829.14 mi (1,334.37 km) |
| Santander to Morbach | 677.89 mi (1,090.96 km) |
| Santander to Morfelden-Walldorf | 738.82 mi (1,189.02 km) |
| Santander to Morlenbach | 730.03 mi (1,174.86 km) |
| Santander to Morsbach | 743.15 mi (1,195.99 km) |
| Santander to Mosbach | 737.58 mi (1,187.02 km) |
| Santander to Mosigkau | 940.87 mi (1,514.18 km) |
| Santander to Mossingen | 704.89 mi (1,134.41 km) |
| Santander to Much | 734.72 mi (1,182.41 km) |
| Santander to Mucheln | 905.90 mi (1,457.90 km) |
| Santander to Muhlacker | 712.27 mi (1,146.29 km) |
