| Upminster to Miranda de Ebro | 630.88 mi (1,015.30 km) |
| Upminster to Mislata | 835.31 mi (1,344.30 km) |
| Upminster to Moana | 767.43 mi (1,235.06 km) |
| Upminster to Moguer | 1,045.71 mi (1,682.90 km) |
| Upminster to Molina de Segura | 935.53 mi (1,505.59 km) |
| Upminster to Molins de Rey | 705.68 mi (1,135.69 km) |
| Upminster to Mollerusa | 686.36 mi (1,104.59 km) |
| Upminster to Mollet | 698.49 mi (1,124.11 km) |
| Upminster to Moncada | 701.70 mi (1,129.28 km) |
| Upminster to Moncada | 830.40 mi (1,336.40 km) |
| Upminster to Monforte de Lemos | 722.84 mi (1,163.30 km) |
| Upminster to Monforte del Cid | 911.65 mi (1,467.16 km) |
| Upminster to Mongat | 703.65 mi (1,132.41 km) |
| Upminster to Monovar | 907.96 mi (1,461.21 km) |
| Upminster to Monserrat | 843.81 mi (1,357.99 km) |
