| Castleford to Masanasa | 989.59 mi (1,592.59 km) |
| Castleford to Masquefa | 856.39 mi (1,378.23 km) |
| Castleford to Matadepera | 851.29 mi (1,370.02 km) |
| Castleford to Mazarron | 1,113.63 mi (1,792.21 km) |
| Castleford to Meco | 914.02 mi (1,470.98 km) |
| Castleford to Medina del Campo | 873.52 mi (1,405.80 km) |
| Castleford to Medina Sidonia | 1,211.77 mi (1,950.15 km) |
| Castleford to Mejorada del Campo | 925.12 mi (1,488.84 km) |
| Castleford to Meliana | 981.49 mi (1,579.55 km) |
| Castleford to Mengibar | 1,094.28 mi (1,761.07 km) |
| Castleford to Merida | 1,050.24 mi (1,690.19 km) |
| Castleford to Miajadas | 1,030.53 mi (1,658.48 km) |
| Castleford to Mieres | 750.51 mi (1,207.83 km) |
| Castleford to Miguelturra | 1,026.38 mi (1,651.80 km) |
| Castleford to Mijas | 1,193.01 mi (1,919.96 km) |
