| Middlesbrough to Mexborough | 74.47 mi (119.85 km) |
| Middlesbrough to Mickleover | 116.50 mi (187.49 km) |
| Middlesbrough to Middleton | 80.45 mi (129.47 km) |
| Middlesbrough to Middlewich | 107.57 mi (173.11 km) |
| Middlesbrough to Midsomer Norton | 233.33 mi (375.50 km) |
| Middlesbrough to Mildenhall | 170.09 mi (273.73 km) |
| Middlesbrough to Milford Haven | 252.92 mi (407.04 km) |
| Middlesbrough to Mill Hill | 208.50 mi (335.54 km) |
| Middlesbrough to Milngavie | 153.56 mi (247.14 km) |
| Middlesbrough to Milnrow | 75.62 mi (121.70 km) |
| Middlesbrough to Milton | 111.78 mi (179.89 km) |
| Middlesbrough to Milton Keynes | 176.36 mi (283.83 km) |
| Middlesbrough to Minehead | 251.00 mi (403.94 km) |
| Middlesbrough to Minster | 234.00 mi (376.59 km) |
| Middlesbrough to Mirfield | 64.57 mi (103.92 km) |
