| Swallownest to Masanasa | 965.12 mi (1,553.20 km) |
| Swallownest to Masquefa | 832.17 mi (1,339.25 km) |
| Swallownest to Matadepera | 827.12 mi (1,331.13 km) |
| Swallownest to Mazarron | 1,089.19 mi (1,752.88 km) |
| Swallownest to Meco | 889.90 mi (1,432.15 km) |
| Swallownest to Medina del Campo | 849.94 mi (1,367.85 km) |
| Swallownest to Medina Sidonia | 1,188.17 mi (1,912.18 km) |
| Swallownest to Mejorada del Campo | 901.01 mi (1,450.03 km) |
| Swallownest to Meliana | 957.02 mi (1,540.17 km) |
| Swallownest to Mengibar | 1,070.19 mi (1,722.31 km) |
| Swallownest to Merida | 1,026.98 mi (1,652.76 km) |
| Swallownest to Miajadas | 1,007.20 mi (1,620.92 km) |
| Swallownest to Mieres | 727.61 mi (1,170.97 km) |
| Swallownest to Miguelturra | 1,002.36 mi (1,613.15 km) |
| Swallownest to Mijas | 1,169.07 mi (1,881.44 km) |
