| Formia to Montilla | 1,004.62 mi (1,616.78 km) |
| Formia to Montmelo | 588.92 mi (947.78 km) |
| Formia to Montornes del Valles | 588.07 mi (946.40 km) |
| Formia to Montoro | 981.72 mi (1,579.92 km) |
| Formia to Monzon | 694.56 mi (1,117.79 km) |
| Formia to Mora | 919.13 mi (1,479.20 km) |
| Formia to Moralzarzal | 916.78 mi (1,475.42 km) |
| Formia to Moron de la Frontera | 1,058.00 mi (1,702.68 km) |
| Formia to Mostoles | 915.16 mi (1,472.81 km) |
| Formia to Motril | 969.41 mi (1,560.12 km) |
| Formia to Muchamiel | 770.67 mi (1,240.27 km) |
| Formia to Mula | 832.73 mi (1,340.14 km) |
| Formia to Munguia | 852.04 mi (1,371.23 km) |
| Formia to Murcia | 815.70 mi (1,312.75 km) |
| Formia to Muro del Alcoy | 762.21 mi (1,226.66 km) |
