| Middlesbrough to Mitcham | 224.00 mi (360.50 km) |
| Middlesbrough to Mold | 124.39 mi (200.19 km) |
| Middlesbrough to Molesey | 222.40 mi (357.91 km) |
| Middlesbrough to Monkseaton | 33.42 mi (53.79 km) |
| Middlesbrough to Monmouth | 200.78 mi (323.13 km) |
| Middlesbrough to Montrose | 154.88 mi (249.26 km) |
| Middlesbrough to Morden | 223.61 mi (359.86 km) |
| Middlesbrough to Morecambe | 74.49 mi (119.88 km) |
| Middlesbrough to Moreton | 111.36 mi (179.22 km) |
| Middlesbrough to Morley | 59.07 mi (95.06 km) |
| Middlesbrough to Morpeth | 44.65 mi (71.86 km) |
| Middlesbrough to Morriston | 230.28 mi (370.60 km) |
| Middlesbrough to Mosbrough | 86.64 mi (139.43 km) |
| Middlesbrough to Mossley | 80.29 mi (129.21 km) |
| Middlesbrough to Moston | 82.81 mi (133.27 km) |
