| Clay to Montijo | 4,321.81 mi (6,955.29 km) |
| Clay to Montilla | 4,456.99 mi (7,172.84 km) |
| Clay to Montmelo | 4,673.58 mi (7,521.41 km) |
| Clay to Montornes del Valles | 4,674.69 mi (7,523.18 km) |
| Clay to Montoro | 4,457.24 mi (7,173.23 km) |
| Clay to Monzon | 4,567.07 mi (7,349.98 km) |
| Clay to Mora | 4,440.56 mi (7,146.38 km) |
| Clay to Moralzarzal | 4,404.11 mi (7,087.73 km) |
| Clay to Moron de la Frontera | 4,428.92 mi (7,127.65 km) |
| Clay to Mostoles | 4,418.36 mi (7,110.66 km) |
| Clay to Motril | 4,536.83 mi (7,301.33 km) |
| Clay to Muchamiel | 4,639.62 mi (7,466.74 km) |
| Clay to Mula | 4,599.53 mi (7,402.22 km) |
| Clay to Munguia | 4,385.67 mi (7,058.05 km) |
| Clay to Murcia | 4,618.89 mi (7,433.38 km) |
