| Middlesbrough to Mancha Real | 1,165.49 mi (1,875.67 km) |
| Middlesbrough to Manilva | 1,271.48 mi (2,046.25 km) |
| Middlesbrough to Manises | 1,043.49 mi (1,679.34 km) |
| Middlesbrough to Manlleu | 883.61 mi (1,422.03 km) |
| Middlesbrough to Manresa | 898.82 mi (1,446.50 km) |
| Middlesbrough to Manzanares | 1,081.10 mi (1,739.87 km) |
| Middlesbrough to Manzanares el Real | 964.50 mi (1,552.22 km) |
| Middlesbrough to Maracena | 1,205.96 mi (1,940.81 km) |
| Middlesbrough to Marbella | 1,259.82 mi (2,027.49 km) |
| Middlesbrough to Marchena | 1,207.68 mi (1,943.57 km) |
| Middlesbrough to Marin | 907.33 mi (1,460.20 km) |
| Middlesbrough to Marratxi | 1,048.35 mi (1,687.16 km) |
| Middlesbrough to Martorell | 916.78 mi (1,475.42 km) |
| Middlesbrough to Martos | 1,172.00 mi (1,886.15 km) |
| Middlesbrough to Masamagrell | 1,037.69 mi (1,670.01 km) |
