| Shannon to Masquefa | 921.01 mi (1,482.22 km) |
| Shannon to Matadepera | 920.35 mi (1,481.17 km) |
| Shannon to Mazarron | 1,105.86 mi (1,779.71 km) |
| Shannon to Meco | 879.69 mi (1,415.72 km) |
| Shannon to Medina del Campo | 809.97 mi (1,303.53 km) |
| Shannon to Medina Sidonia | 1,131.67 mi (1,821.25 km) |
| Shannon to Mejorada del Campo | 889.34 mi (1,431.26 km) |
| Shannon to Meliana | 996.64 mi (1,603.93 km) |
| Shannon to Mengibar | 1,047.36 mi (1,685.57 km) |
| Shannon to Merida | 962.06 mi (1,548.28 km) |
| Shannon to Miajadas | 946.59 mi (1,523.40 km) |
| Shannon to Mieres | 669.11 mi (1,076.83 km) |
| Shannon to Miguelturra | 978.30 mi (1,574.43 km) |
| Shannon to Mijas | 1,132.14 mi (1,822.00 km) |
| Shannon to Miranda de Ebro | 745.34 mi (1,199.51 km) |
