| Opatija to Menges | 58.74 mi (94.53 km) |
| Opatija to Metlika | 54.08 mi (87.03 km) |
| Opatija to Mezica | 86.24 mi (138.79 km) |
| Opatija to Miklavz na Dravskem Polju | 105.28 mi (169.44 km) |
| Opatija to Miren | 51.32 mi (82.59 km) |
| Opatija to Mirna | 56.32 mi (90.64 km) |
| Opatija to Mirna Pec | 52.57 mi (84.61 km) |
| Opatija to Mislinja | 87.89 mi (141.44 km) |
| Opatija to Mokronog | 58.77 mi (94.59 km) |
| Opatija to Moravce | 59.42 mi (95.63 km) |
| Opatija to Moravske-Toplice | 131.83 mi (212.16 km) |
| Opatija to Mozirje | 76.29 mi (122.78 km) |
| Opatija to Murska Sobota | 128.50 mi (206.81 km) |
| Opatija to Muta | 97.95 mi (157.64 km) |
| Opatija to Naklo | 65.06 mi (104.71 km) |
