| Castelo Branco to Manerbio | 972.83 mi (1,565.62 km) |
| Castelo Branco to Manfredonia | 1,228.75 mi (1,977.48 km) |
| Castelo Branco to Maniago | 1,107.92 mi (1,783.03 km) |
| Castelo Branco to Mantova | 999.54 mi (1,608.61 km) |
| Castelo Branco to Maranello | 992.73 mi (1,597.65 km) |
| Castelo Branco to Marano di Napoli | 1,141.14 mi (1,836.50 km) |
| Castelo Branco to Marano Vicentino | 1,039.71 mi (1,673.25 km) |
| Castelo Branco to Marcianise | 1,146.71 mi (1,845.46 km) |
| Castelo Branco to Marcon | 1,077.38 mi (1,733.87 km) |
| Castelo Branco to Mareno di Piave | 1,084.96 mi (1,746.07 km) |
| Castelo Branco to Margherita di Savoia | 1,241.59 mi (1,998.14 km) |
| Castelo Branco to Mariano Comense | 936.46 mi (1,507.08 km) |
| Castelo Branco to Marigliano | 1,154.91 mi (1,858.65 km) |
| Castelo Branco to Marino | 1,061.00 mi (1,707.52 km) |
| Castelo Branco to Marostica | 1,050.87 mi (1,691.21 km) |
