| Boom to Masquefa | 672.91 mi (1,082.95 km) |
| Boom to Matadepera | 664.35 mi (1,069.17 km) |
| Boom to Mazarron | 972.35 mi (1,564.84 km) |
| Boom to Meco | 815.34 mi (1,312.16 km) |
| Boom to Medina del Campo | 807.35 mi (1,299.30 km) |
| Boom to Medina Sidonia | 1,130.22 mi (1,818.92 km) |
| Boom to Mejorada del Campo | 826.53 mi (1,330.17 km) |
| Boom to Meliana | 830.24 mi (1,336.14 km) |
| Boom to Mengibar | 990.15 mi (1,593.50 km) |
| Boom to Merida | 988.65 mi (1,591.08 km) |
| Boom to Miajadas | 966.67 mi (1,555.71 km) |
| Boom to Mieres | 719.72 mi (1,158.27 km) |
| Boom to Miguelturra | 929.09 mi (1,495.22 km) |
| Boom to Mijas | 1,094.67 mi (1,761.70 km) |
| Boom to Miranda de Ebro | 674.29 mi (1,085.16 km) |
