| Upminster to Melzo | 591.57 mi (952.03 km) |
| Upminster to Mendicino | 1,143.73 mi (1,840.65 km) |
| Upminster to Menfi | 1,145.43 mi (1,843.40 km) |
| Upminster to Mentana | 879.92 mi (1,416.09 km) |
| Upminster to Merano | 596.82 mi (960.50 km) |
| Upminster to Merate | 581.86 mi (936.42 km) |
| Upminster to Mercato San Severino | 1,014.39 mi (1,632.50 km) |
| Upminster to Mercogliano | 1,006.02 mi (1,619.03 km) |
| Upminster to Mesagne | 1,127.95 mi (1,815.26 km) |
| Upminster to Messina | 1,184.05 mi (1,905.54 km) |
| Upminster to Mestre | 688.86 mi (1,108.62 km) |
| Upminster to Mestrino | 673.86 mi (1,084.48 km) |
| Upminster to Milan | 586.03 mi (943.13 km) |
| Upminster to Milazzo | 1,173.17 mi (1,888.03 km) |
| Upminster to Minerbio | 704.26 mi (1,133.40 km) |
