| Castelo Branco to Lubbeek | 968.68 mi (1,558.95 km) |
| Castelo Branco to Lummen | 984.47 mi (1,584.35 km) |
| Castelo Branco to Maaseik | 1,008.01 mi (1,622.24 km) |
| Castelo Branco to Machelen | 958.33 mi (1,542.28 km) |
| Castelo Branco to Maldegem | 945.85 mi (1,522.20 km) |
| Castelo Branco to Malmedy | 982.19 mi (1,580.69 km) |
| Castelo Branco to Manage | 931.26 mi (1,498.72 km) |
| Castelo Branco to Marche-en-Famenne | 950.83 mi (1,530.21 km) |
| Castelo Branco to Mariakerke | 945.52 mi (1,521.67 km) |
| Castelo Branco to Mechelen | 965.68 mi (1,554.12 km) |
| Castelo Branco to Mechelen-aan-de-Maas | 1,000.30 mi (1,609.83 km) |
| Castelo Branco to Meerhout | 988.60 mi (1,590.99 km) |
| Castelo Branco to Meise | 956.55 mi (1,539.42 km) |
| Castelo Branco to Melle | 945.04 mi (1,520.89 km) |
| Castelo Branco to Melsele | 970.14 mi (1,561.30 km) |
