| Opera to Montilla | 894.77 mi (1,440.00 km) |
| Opera to Montmelo | 437.92 mi (704.77 km) |
| Opera to Montornes del Valles | 437.70 mi (704.41 km) |
| Opera to Montoro | 864.86 mi (1,391.85 km) |
| Opera to Monzon | 510.72 mi (821.92 km) |
| Opera to Mora | 768.50 mi (1,236.78 km) |
| Opera to Moralzarzal | 739.98 mi (1,190.88 km) |
| Opera to Moron de la Frontera | 949.55 mi (1,528.16 km) |
| Opera to Mostoles | 747.63 mi (1,203.19 km) |
| Opera to Motril | 890.11 mi (1,432.49 km) |
| Opera to Muchamiel | 691.03 mi (1,112.10 km) |
| Opera to Mula | 748.65 mi (1,204.83 km) |
| Opera to Munguia | 611.47 mi (984.07 km) |
| Opera to Murcia | 737.96 mi (1,187.64 km) |
| Opera to Muro del Alcoy | 672.31 mi (1,081.99 km) |
