| Boom to Montilla | 1,031.57 mi (1,660.15 km) |
| Boom to Montmelo | 665.99 mi (1,071.81 km) |
| Boom to Montornes del Valles | 666.57 mi (1,072.75 km) |
| Boom to Montoro | 998.68 mi (1,607.22 km) |
| Boom to Monzon | 663.94 mi (1,068.50 km) |
| Boom to Mora | 879.93 mi (1,416.11 km) |
| Boom to Moralzarzal | 822.16 mi (1,323.14 km) |
| Boom to Moron de la Frontera | 1,078.43 mi (1,735.57 km) |
| Boom to Mostoles | 841.09 mi (1,353.60 km) |
| Boom to Motril | 1,063.74 mi (1,711.93 km) |
| Boom to Muchamiel | 906.18 mi (1,458.35 km) |
| Boom to Mula | 945.32 mi (1,521.35 km) |
| Boom to Munguia | 631.58 mi (1,016.43 km) |
| Boom to Murcia | 943.88 mi (1,519.03 km) |
| Boom to Muro del Alcoy | 881.47 mi (1,418.59 km) |
