| Santander to Masanasa | 331.00 mi (532.69 km) |
| Santander to Masquefa | 316.59 mi (509.51 km) |
| Santander to Matadepera | 323.31 mi (520.31 km) |
| Santander to Mazarron | 425.73 mi (685.15 km) |
| Santander to Meco | 202.48 mi (325.86 km) |
| Santander to Medina del Campo | 159.84 mi (257.24 km) |
| Santander to Medina Sidonia | 496.10 mi (798.40 km) |
| Santander to Mejorada del Campo | 212.94 mi (342.69 km) |
| Santander to Meliana | 325.39 mi (523.67 km) |
| Santander to Mengibar | 379.63 mi (610.96 km) |
| Santander to Merida | 341.53 mi (549.64 km) |
| Santander to Miajadas | 320.24 mi (515.37 km) |
| Santander to Mieres | 100.13 mi (161.14 km) |
| Santander to Miguelturra | 310.74 mi (500.09 km) |
| Santander to Mijas | 476.19 mi (766.35 km) |
