| Opera to Masquefa | 457.71 mi (736.61 km) |
| Opera to Matadepera | 444.87 mi (715.95 km) |
| Opera to Mazarron | 764.50 mi (1,230.35 km) |
| Opera to Meco | 715.44 mi (1,151.40 km) |
| Opera to Medina del Campo | 762.88 mi (1,227.74 km) |
| Opera to Medina Sidonia | 999.02 mi (1,607.76 km) |
| Opera to Mejorada del Campo | 723.89 mi (1,164.99 km) |
| Opera to Meliana | 632.88 mi (1,018.52 km) |
| Opera to Mengibar | 843.42 mi (1,357.35 km) |
| Opera to Merida | 911.71 mi (1,467.26 km) |
| Opera to Miajadas | 890.17 mi (1,432.60 km) |
| Opera to Mieres | 754.53 mi (1,214.29 km) |
| Opera to Miguelturra | 805.33 mi (1,296.05 km) |
| Opera to Mijas | 941.05 mi (1,514.47 km) |
| Opera to Miranda de Ebro | 630.98 mi (1,015.47 km) |
