| Middlesex to Miranda de Ebro | 3,583.59 mi (5,767.23 km) |
| Middlesex to Mislata | 3,796.75 mi (6,110.28 km) |
| Middlesex to Moana | 3,320.36 mi (5,343.60 km) |
| Middlesex to Moguer | 3,552.60 mi (5,717.35 km) |
| Middlesex to Molina de Segura | 3,803.27 mi (6,120.77 km) |
| Middlesex to Molins de Rey | 3,850.66 mi (6,197.05 km) |
| Middlesex to Mollerusa | 3,792.08 mi (6,102.76 km) |
| Middlesex to Mollet | 3,855.91 mi (6,205.49 km) |
| Middlesex to Moncada | 3,856.37 mi (6,206.23 km) |
| Middlesex to Moncada | 3,795.50 mi (6,108.27 km) |
| Middlesex to Monforte de Lemos | 3,372.99 mi (5,428.30 km) |
| Middlesex to Monforte del Cid | 3,816.22 mi (6,141.61 km) |
| Middlesex to Mongat | 3,861.21 mi (6,214.01 km) |
| Middlesex to Monovar | 3,809.20 mi (6,130.31 km) |
| Middlesex to Monserrat | 3,791.49 mi (6,101.81 km) |
