| Middlesbrough to Melzo | 783.53 mi (1,260.96 km) |
| Middlesbrough to Mendicino | 1,332.46 mi (2,144.39 km) |
| Middlesbrough to Menfi | 1,349.88 mi (2,172.42 km) |
| Middlesbrough to Mentana | 1,073.10 mi (1,726.99 km) |
| Middlesbrough to Merano | 768.39 mi (1,236.61 km) |
| Middlesbrough to Merate | 772.42 mi (1,243.09 km) |
| Middlesbrough to Mercato San Severino | 1,203.34 mi (1,936.59 km) |
| Middlesbrough to Mercogliano | 1,194.51 mi (1,922.38 km) |
| Middlesbrough to Mesagne | 1,304.75 mi (2,099.79 km) |
| Middlesbrough to Messina | 1,378.55 mi (2,218.57 km) |
| Middlesbrough to Mestre | 864.16 mi (1,390.73 km) |
| Middlesbrough to Mestrino | 852.27 mi (1,371.60 km) |
| Middlesbrough to Milan | 779.52 mi (1,254.51 km) |
| Middlesbrough to Milazzo | 1,368.74 mi (2,202.78 km) |
| Middlesbrough to Minerbio | 890.16 mi (1,432.57 km) |
