| Barcelona to Montevarchi | 500.94 mi (806.18 km) |
| Barcelona to Monticello Conte Otto | 553.73 mi (891.15 km) |
| Barcelona to Montichiari | 497.34 mi (800.39 km) |
| Barcelona to Montignoso | 444.41 mi (715.20 km) |
| Barcelona to Montopoli in Val d'Arno | 463.93 mi (746.63 km) |
| Barcelona to Monza | 458.85 mi (738.45 km) |
| Barcelona to Morbegno | 493.32 mi (793.92 km) |
| Barcelona to Mori | 537.39 mi (864.84 km) |
| Barcelona to Morlupo | 534.52 mi (860.23 km) |
| Barcelona to Morrovalle | 597.06 mi (960.88 km) |
| Barcelona to Mortara | 424.72 mi (683.52 km) |
| Barcelona to Mosciano Sant'Angelo | 607.33 mi (977.40 km) |
| Barcelona to Motta di Livenza | 603.37 mi (971.03 km) |
| Barcelona to Motta Sant'Anastasia | 732.38 mi (1,178.65 km) |
| Barcelona to Mottola | 775.37 mi (1,247.84 km) |
