| Civitavecchia to Montilla | 924.16 mi (1,487.29 km) |
| Civitavecchia to Montmelo | 492.87 mi (793.19 km) |
| Civitavecchia to Montornes del Valles | 492.09 mi (791.94 km) |
| Civitavecchia to Montoro | 899.47 mi (1,447.55 km) |
| Civitavecchia to Monzon | 595.77 mi (958.80 km) |
| Civitavecchia to Mora | 829.30 mi (1,334.63 km) |
| Civitavecchia to Moralzarzal | 822.16 mi (1,323.14 km) |
| Civitavecchia to Moron de la Frontera | 978.43 mi (1,574.63 km) |
| Civitavecchia to Mostoles | 822.15 mi (1,323.13 km) |
| Civitavecchia to Motril | 895.45 mi (1,441.08 km) |
| Civitavecchia to Muchamiel | 693.31 mi (1,115.78 km) |
| Civitavecchia to Mula | 755.56 mi (1,215.95 km) |
| Civitavecchia to Munguia | 747.48 mi (1,202.95 km) |
| Civitavecchia to Murcia | 739.68 mi (1,190.41 km) |
| Civitavecchia to Muro del Alcoy | 682.37 mi (1,098.16 km) |
