| Santander to Lubbeek | 653.06 mi (1,050.99 km) |
| Santander to Lummen | 668.73 mi (1,076.22 km) |
| Santander to Maaseik | 692.14 mi (1,113.89 km) |
| Santander to Machelen | 643.02 mi (1,034.83 km) |
| Santander to Maldegem | 632.30 mi (1,017.59 km) |
| Santander to Malmedy | 666.39 mi (1,072.45 km) |
| Santander to Manage | 615.68 mi (990.83 km) |
| Santander to Marche-en-Famenne | 634.93 mi (1,021.82 km) |
| Santander to Mariakerke | 631.33 mi (1,016.03 km) |
| Santander to Mechelen | 650.47 mi (1,046.83 km) |
| Santander to Mechelen-aan-de-Maas | 684.41 mi (1,101.44 km) |
| Santander to Meerhout | 673.04 mi (1,083.15 km) |
| Santander to Meise | 641.35 mi (1,032.16 km) |
| Santander to Melle | 630.54 mi (1,014.76 km) |
| Santander to Melsele | 655.40 mi (1,054.76 km) |
