| Republic to Miranda de Ebro | 4,571.41 mi (7,356.97 km) |
| Republic to Mislata | 4,797.06 mi (7,720.13 km) |
| Republic to Moana | 4,322.62 mi (6,956.58 km) |
| Republic to Moguer | 4,575.22 mi (7,363.11 km) |
| Republic to Molina de Segura | 4,812.26 mi (7,744.59 km) |
| Republic to Molins de Rey | 4,834.30 mi (7,780.05 km) |
| Republic to Mollerusa | 4,777.22 mi (7,688.19 km) |
| Republic to Mollet | 4,838.31 mi (7,786.51 km) |
| Republic to Moncada | 4,839.13 mi (7,787.82 km) |
| Republic to Moncada | 4,795.40 mi (7,717.45 km) |
| Republic to Monforte de Lemos | 4,371.52 mi (7,035.28 km) |
| Republic to Monforte del Cid | 4,822.67 mi (7,761.33 km) |
| Republic to Mongat | 4,843.85 mi (7,795.42 km) |
| Republic to Monovar | 4,815.60 mi (7,749.97 km) |
| Republic to Monserrat | 4,792.82 mi (7,713.30 km) |
