| Hertford to Marsala | 1,141.75 mi (1,837.47 km) |
| Hertford to Marsciano | 842.67 mi (1,356.14 km) |
| Hertford to Martano | 1,185.48 mi (1,907.85 km) |
| Hertford to Martellago | 704.23 mi (1,133.34 km) |
| Hertford to Martina Franca | 1,125.98 mi (1,812.09 km) |
| Hertford to Martinengo | 620.88 mi (999.21 km) |
| Hertford to Martinsicuro | 896.38 mi (1,442.58 km) |
| Hertford to Mascali | 1,220.91 mi (1,964.87 km) |
| Hertford to Mascalucia | 1,227.26 mi (1,975.08 km) |
| Hertford to Masera di Padova | 704.74 mi (1,134.17 km) |
| Hertford to Maserada sul Piave | 700.64 mi (1,127.57 km) |
| Hertford to Massa | 713.70 mi (1,148.59 km) |
| Hertford to Massa Lombarda | 745.68 mi (1,200.06 km) |
| Hertford to Massafra | 1,124.62 mi (1,809.90 km) |
| Hertford to Massalubrense | 1,031.91 mi (1,660.71 km) |
