| Hwlffordd to Masanasa | 883.78 mi (1,422.31 km) |
| Hwlffordd to Masquefa | 779.96 mi (1,255.22 km) |
| Hwlffordd to Matadepera | 777.70 mi (1,251.59 km) |
| Hwlffordd to Mazarron | 997.21 mi (1,604.85 km) |
| Hwlffordd to Meco | 780.95 mi (1,256.81 km) |
| Hwlffordd to Medina del Campo | 725.48 mi (1,167.55 km) |
| Hwlffordd to Medina Sidonia | 1,060.44 mi (1,706.62 km) |
| Hwlffordd to Mejorada del Campo | 791.49 mi (1,273.78 km) |
| Hwlffordd to Meliana | 876.37 mi (1,410.39 km) |
| Hwlffordd to Mengibar | 957.33 mi (1,540.68 km) |
| Hwlffordd to Merida | 893.72 mi (1,438.30 km) |
| Hwlffordd to Miajadas | 875.62 mi (1,409.17 km) |
| Hwlffordd to Mieres | 591.88 mi (952.54 km) |
| Hwlffordd to Miguelturra | 888.05 mi (1,429.18 km) |
| Hwlffordd to Mijas | 1,050.35 mi (1,690.37 km) |
