| Castelo Branco to Massarosa | 957.44 mi (1,540.86 km) |
| Castelo Branco to Matelica | 1,084.06 mi (1,744.63 km) |
| Castelo Branco to Matera | 1,268.43 mi (2,041.34 km) |
| Castelo Branco to Matino | 1,353.59 mi (2,178.39 km) |
| Castelo Branco to Mazzarino | 1,182.27 mi (1,902.68 km) |
| Castelo Branco to Meda | 934.93 mi (1,504.62 km) |
| Castelo Branco to Medesano | 961.24 mi (1,546.96 km) |
| Castelo Branco to Medicina | 1,028.93 mi (1,655.90 km) |
| Castelo Branco to Meldola | 1,044.69 mi (1,681.26 km) |
| Castelo Branco to Melegnano | 935.21 mi (1,505.07 km) |
| Castelo Branco to Melendugno | 1,361.98 mi (2,191.90 km) |
| Castelo Branco to Melfi | 1,217.11 mi (1,958.74 km) |
| Castelo Branco to Melilli | 1,233.03 mi (1,984.38 km) |
| Castelo Branco to Melito di Napoli | 1,143.68 mi (1,840.58 km) |
| Castelo Branco to Melito di Porto Salvo | 1,255.85 mi (2,021.09 km) |
