| Opatija to Montilla | 1,113.17 mi (1,791.47 km) |
| Opatija to Montmelo | 657.60 mi (1,058.31 km) |
| Opatija to Montornes del Valles | 657.15 mi (1,057.58 km) |
| Opatija to Montoro | 1,085.04 mi (1,746.21 km) |
| Opatija to Monzon | 743.15 mi (1,195.98 km) |
| Opatija to Mora | 997.23 mi (1,604.88 km) |
| Opatija to Moralzarzal | 975.03 mi (1,569.15 km) |
| Opatija to Moron de la Frontera | 1,168.26 mi (1,880.13 km) |
| Opatija to Mostoles | 980.52 mi (1,577.99 km) |
| Opatija to Motril | 1,097.94 mi (1,766.96 km) |
| Opatija to Muchamiel | 894.60 mi (1,439.72 km) |
| Opatija to Mula | 955.37 mi (1,537.52 km) |
| Opatija to Munguia | 856.55 mi (1,378.49 km) |
| Opatija to Murcia | 942.07 mi (1,516.12 km) |
| Opatija to Muro del Alcoy | 879.19 mi (1,414.91 km) |
