| Formia to Marsciano | 131.63 mi (211.83 km) |
| Formia to Martano | 256.00 mi (411.99 km) |
| Formia to Martellago | 304.64 mi (490.27 km) |
| Formia to Martina Franca | 197.75 mi (318.25 km) |
| Formia to Martinengo | 354.50 mi (570.51 km) |
| Formia to Martinsicuro | 112.75 mi (181.45 km) |
| Formia to Mascali | 257.21 mi (413.94 km) |
| Formia to Mascalucia | 266.84 mi (429.43 km) |
| Formia to Masera di Padova | 293.32 mi (472.05 km) |
| Formia to Maserada sul Piave | 316.53 mi (509.40 km) |
| Formia to Massa | 260.48 mi (419.20 km) |
| Formia to Massa Lombarda | 238.07 mi (383.14 km) |
| Formia to Massafra | 188.70 mi (303.69 km) |
| Formia to Massalubrense | 59.01 mi (94.96 km) |
| Formia to Massarosa | 245.29 mi (394.76 km) |
