| Castle Rock to Miranda de Ebro | 4,959.27 mi (7,981.17 km) |
| Castle Rock to Mislata | 5,199.48 mi (8,367.75 km) |
| Castle Rock to Moana | 4,734.92 mi (7,620.12 km) |
| Castle Rock to Moguer | 5,018.59 mi (8,076.64 km) |
| Castle Rock to Molina de Segura | 5,228.24 mi (8,414.04 km) |
| Castle Rock to Molins de Rey | 5,212.24 mi (8,388.28 km) |
| Castle Rock to Mollerusa | 5,158.12 mi (8,301.19 km) |
| Castle Rock to Mollet | 5,214.52 mi (8,391.95 km) |
| Castle Rock to Moncada | 5,215.80 mi (8,394.02 km) |
| Castle Rock to Moncada | 5,197.22 mi (8,364.11 km) |
| Castle Rock to Monforte de Lemos | 4,777.60 mi (7,688.81 km) |
| Castle Rock to Monforte del Cid | 5,234.35 mi (8,423.88 km) |
| Castle Rock to Mongat | 5,220.29 mi (8,401.24 km) |
| Castle Rock to Monovar | 5,227.31 mi (8,412.55 km) |
| Castle Rock to Monserrat | 5,196.86 mi (8,363.54 km) |
