| Castle Rock to Montijo | 4,961.01 mi (7,983.97 km) |
| Castle Rock to Montilla | 5,102.16 mi (8,211.13 km) |
| Castle Rock to Montmelo | 5,215.21 mi (8,393.08 km) |
| Castle Rock to Montornes del Valles | 5,216.35 mi (8,394.90 km) |
| Castle Rock to Montoro | 5,094.68 mi (8,199.09 km) |
| Castle Rock to Monzon | 5,117.78 mi (8,236.28 km) |
| Castle Rock to Mora | 5,050.25 mi (8,127.59 km) |
| Castle Rock to Moralzarzal | 5,000.61 mi (8,047.70 km) |
| Castle Rock to Moron de la Frontera | 5,085.88 mi (8,184.93 km) |
| Castle Rock to Mostoles | 5,019.20 mi (8,077.62 km) |
| Castle Rock to Motril | 5,186.05 mi (8,346.13 km) |
| Castle Rock to Muchamiel | 5,244.76 mi (8,440.62 km) |
| Castle Rock to Mula | 5,217.09 mi (8,396.09 km) |
| Castle Rock to Munguia | 4,934.71 mi (7,941.65 km) |
| Castle Rock to Murcia | 5,234.73 mi (8,424.49 km) |
