| Sierre to Montijo | 880.25 mi (1,416.63 km) |
| Sierre to Montilla | 866.29 mi (1,394.16 km) |
| Sierre to Montmelo | 420.05 mi (676.01 km) |
| Sierre to Montornes del Valles | 420.10 mi (676.08 km) |
| Sierre to Montoro | 835.00 mi (1,343.80 km) |
| Sierre to Monzon | 473.71 mi (762.36 km) |
| Sierre to Mora | 730.67 mi (1,175.91 km) |
| Sierre to Moralzarzal | 694.28 mi (1,117.33 km) |
| Sierre to Moron de la Frontera | 920.10 mi (1,480.75 km) |
| Sierre to Mostoles | 704.83 mi (1,134.31 km) |
| Sierre to Motril | 871.28 mi (1,402.18 km) |
| Sierre to Muchamiel | 679.58 mi (1,093.69 km) |
| Sierre to Mula | 733.22 mi (1,180.01 km) |
| Sierre to Munguia | 547.35 mi (880.87 km) |
| Sierre to Murcia | 724.99 mi (1,166.75 km) |
