| Opera to Miedzyrzec Podlaski | 766.72 mi (1,233.92 km) |
| Opera to Miedzyrzecz | 566.93 mi (912.39 km) |
| Opera to Mielec | 658.87 mi (1,060.34 km) |
| Opera to Mikolow | 557.31 mi (896.90 km) |
| Opera to Milanowek | 698.74 mi (1,124.51 km) |
| Opera to Milicz | 562.51 mi (905.27 km) |
| Opera to Minsk Mazowiecki | 730.99 mi (1,176.42 km) |
| Opera to Mlawa | 732.12 mi (1,178.23 km) |
| Opera to Mogilno | 638.34 mi (1,027.31 km) |
| Opera to Monki | 822.66 mi (1,323.94 km) |
| Opera to Morag | 758.21 mi (1,220.21 km) |
| Opera to Mosina | 586.96 mi (944.63 km) |
| Opera to Mragowo | 795.41 mi (1,280.08 km) |
| Opera to Murowana Goslina | 608.73 mi (979.65 km) |
| Opera to Myslenice | 585.73 mi (942.64 km) |
