| Formia to Masquefa | 611.61 mi (984.29 km) |
| Formia to Matadepera | 600.48 mi (966.37 km) |
| Formia to Mazarron | 834.86 mi (1,343.58 km) |
| Formia to Meco | 884.65 mi (1,423.71 km) |
| Formia to Medina del Campo | 960.43 mi (1,545.66 km) |
| Formia to Medina Sidonia | 1,099.13 mi (1,768.88 km) |
| Formia to Mejorada del Campo | 889.47 mi (1,431.46 km) |
| Formia to Meliana | 743.80 mi (1,197.03 km) |
| Formia to Mengibar | 953.25 mi (1,534.10 km) |
| Formia to Merida | 1,064.81 mi (1,713.64 km) |
| Formia to Miajadas | 1,046.57 mi (1,684.29 km) |
| Formia to Mieres | 998.85 mi (1,607.49 km) |
| Formia to Miguelturra | 940.01 mi (1,512.79 km) |
| Formia to Mijas | 1,030.18 mi (1,657.91 km) |
| Formia to Miranda de Ebro | 854.34 mi (1,374.93 km) |
