| Grays to Miranda de Ebro | 626.38 mi (1,008.07 km) |
| Grays to Mislata | 829.89 mi (1,335.59 km) |
| Grays to Moana | 765.03 mi (1,231.20 km) |
| Grays to Moguer | 1,041.83 mi (1,676.66 km) |
| Grays to Molina de Segura | 930.27 mi (1,497.13 km) |
| Grays to Molins de Rey | 699.72 mi (1,126.09 km) |
| Grays to Mollerusa | 680.63 mi (1,095.37 km) |
| Grays to Mollet | 692.48 mi (1,114.44 km) |
| Grays to Moncada | 695.70 mi (1,119.62 km) |
| Grays to Moncada | 824.98 mi (1,327.68 km) |
| Grays to Monforte de Lemos | 720.07 mi (1,158.83 km) |
| Grays to Monforte del Cid | 906.29 mi (1,458.54 km) |
| Grays to Mongat | 697.63 mi (1,122.73 km) |
| Grays to Monovar | 902.62 mi (1,452.63 km) |
| Grays to Monserrat | 838.44 mi (1,349.34 km) |
