| Opatija to Monchengladbach | 542.73 mi (873.44 km) |
| Opatija to Monschau | 518.09 mi (833.78 km) |
| Opatija to Montabaur | 462.64 mi (744.54 km) |
| Opatija to Moosburg | 243.60 mi (392.03 km) |
| Opatija to Morbach | 455.77 mi (733.49 km) |
| Opatija to Morfelden-Walldorf | 417.74 mi (672.29 km) |
| Opatija to Morlenbach | 392.70 mi (631.99 km) |
| Opatija to Morsbach | 487.90 mi (785.21 km) |
| Opatija to Mosbach | 367.68 mi (591.72 km) |
| Opatija to Mosigkau | 458.88 mi (738.50 km) |
| Opatija to Mossingen | 326.07 mi (524.75 km) |
| Opatija to Much | 499.65 mi (804.10 km) |
| Opatija to Mucheln | 427.90 mi (688.63 km) |
| Opatija to Muhlacker | 358.02 mi (576.18 km) |
| Opatija to Muhldorf | 218.06 mi (350.94 km) |
