| Castleton to Miranda de Ebro | 754.43 mi (1,214.14 km) |
| Castleton to Mislata | 978.80 mi (1,575.22 km) |
| Castleton to Moana | 837.60 mi (1,347.99 km) |
| Castleton to Moguer | 1,149.17 mi (1,849.41 km) |
| Castleton to Molina de Segura | 1,074.40 mi (1,729.07 km) |
| Castleton to Molins de Rey | 863.37 mi (1,389.47 km) |
| Castleton to Mollerusa | 838.36 mi (1,349.21 km) |
| Castleton to Mollet | 857.22 mi (1,379.57 km) |
| Castleton to Moncada | 860.28 mi (1,384.48 km) |
| Castleton to Moncada | 974.01 mi (1,567.52 km) |
| Castleton to Monforte de Lemos | 803.39 mi (1,292.92 km) |
| Castleton to Monforte del Cid | 1,053.24 mi (1,695.02 km) |
| Castleton to Mongat | 862.62 mi (1,388.26 km) |
| Castleton to Monovar | 1,048.94 mi (1,688.10 km) |
| Castleton to Monserrat | 986.19 mi (1,587.12 km) |
