| Castleford to Melzo | 743.26 mi (1,196.17 km) |
| Castleford to Mendicino | 1,294.35 mi (2,083.05 km) |
| Castleford to Menfi | 1,304.91 mi (2,100.04 km) |
| Castleford to Mentana | 1,032.90 mi (1,662.30 km) |
| Castleford to Merano | 735.35 mi (1,183.43 km) |
| Castleford to Merate | 732.66 mi (1,179.10 km) |
| Castleford to Mercato San Severino | 1,165.00 mi (1,874.89 km) |
| Castleford to Mercogliano | 1,156.34 mi (1,860.96 km) |
| Castleford to Mesagne | 1,271.16 mi (2,045.74 km) |
| Castleford to Messina | 1,338.11 mi (2,153.47 km) |
| Castleford to Mestre | 830.20 mi (1,336.08 km) |
| Castleford to Mestrino | 817.19 mi (1,315.13 km) |
| Castleford to Milan | 738.65 mi (1,188.75 km) |
| Castleford to Milazzo | 1,327.83 mi (2,136.94 km) |
| Castleford to Minerbio | 852.46 mi (1,371.91 km) |
