| Upminster to Marsala | 1,119.99 mi (1,802.45 km) |
| Upminster to Marsciano | 821.08 mi (1,321.39 km) |
| Upminster to Martano | 1,164.38 mi (1,873.88 km) |
| Upminster to Martellago | 683.37 mi (1,099.78 km) |
| Upminster to Martina Franca | 1,104.80 mi (1,778.00 km) |
| Upminster to Martinengo | 599.40 mi (964.64 km) |
| Upminster to Martinsicuro | 875.05 mi (1,408.25 km) |
| Upminster to Mascali | 1,199.14 mi (1,929.83 km) |
| Upminster to Mascalucia | 1,205.48 mi (1,940.02 km) |
| Upminster to Masera di Padova | 683.70 mi (1,100.30 km) |
| Upminster to Maserada sul Piave | 679.93 mi (1,094.24 km) |
| Upminster to Massa | 691.98 mi (1,113.64 km) |
| Upminster to Massa Lombarda | 724.33 mi (1,165.69 km) |
| Upminster to Massafra | 1,103.37 mi (1,775.71 km) |
| Upminster to Massalubrense | 1,010.27 mi (1,625.88 km) |
