| Castelo Branco to Melun | 783.95 mi (1,261.65 km) |
| Castelo Branco to Mende | 649.49 mi (1,045.25 km) |
| Castelo Branco to Mennecy | 778.20 mi (1,252.38 km) |
| Castelo Branco to Menton | 818.22 mi (1,316.79 km) |
| Castelo Branco to Mericourt | 887.21 mi (1,427.83 km) |
| Castelo Branco to Merignac | 492.66 mi (792.87 km) |
| Castelo Branco to Meru | 804.08 mi (1,294.04 km) |
| Castelo Branco to Merville | 894.34 mi (1,439.30 km) |
| Castelo Branco to Mery-sur-Oise | 796.45 mi (1,281.76 km) |
| Castelo Branco to Metz | 929.03 mi (1,495.13 km) |
| Castelo Branco to Meudon | 784.84 mi (1,263.07 km) |
| Castelo Branco to Meylan | 770.77 mi (1,240.43 km) |
| Castelo Branco to Meyzieu | 754.25 mi (1,213.85 km) |
| Castelo Branco to Meze | 624.82 mi (1,005.55 km) |
| Castelo Branco to Millau | 618.14 mi (994.79 km) |
