| Castellana Grotte to Masquefa | 798.34 mi (1,284.80 km) |
| Castellana Grotte to Matadepera | 787.24 mi (1,266.93 km) |
| Castellana Grotte to Mazarron | 1,012.57 mi (1,629.58 km) |
| Castellana Grotte to Meco | 1,070.94 mi (1,723.51 km) |
| Castellana Grotte to Medina del Campo | 1,147.20 mi (1,846.24 km) |
| Castellana Grotte to Medina Sidonia | 1,277.90 mi (2,056.58 km) |
| Castellana Grotte to Mejorada del Campo | 1,075.60 mi (1,731.01 km) |
| Castellana Grotte to Meliana | 927.47 mi (1,492.62 km) |
| Castellana Grotte to Mengibar | 1,134.60 mi (1,825.96 km) |
| Castellana Grotte to Merida | 1,249.51 mi (2,010.89 km) |
| Castellana Grotte to Miajadas | 1,231.59 mi (1,982.05 km) |
| Castellana Grotte to Mieres | 1,184.32 mi (1,905.98 km) |
| Castellana Grotte to Miguelturra | 1,123.94 mi (1,808.81 km) |
| Castellana Grotte to Mijas | 1,208.03 mi (1,944.14 km) |
| Castellana Grotte to Miranda de Ebro | 1,040.51 mi (1,674.54 km) |
