| Opatija to Minturno | 282.33 mi (454.37 km) |
| Opatija to Mira | 105.40 mi (169.63 km) |
| Opatija to Mirandola | 160.67 mi (258.57 km) |
| Opatija to Mirano | 107.32 mi (172.71 km) |
| Opatija to Misano Adriatico | 122.88 mi (197.76 km) |
| Opatija to Misilmeri | 506.28 mi (814.77 km) |
| Opatija to Missaglia | 241.75 mi (389.06 km) |
| Opatija to Misterbianco | 541.20 mi (870.97 km) |
| Opatija to Modena | 171.58 mi (276.13 km) |
| Opatija to Modica | 585.44 mi (942.18 km) |
| Opatija to Modugno | 319.12 mi (513.58 km) |
| Opatija to Mogliano Veneto | 101.27 mi (162.97 km) |
| Opatija to Molfetta | 308.10 mi (495.84 km) |
| Opatija to Molinella | 137.90 mi (221.92 km) |
| Opatija to Moncalieri | 322.98 mi (519.79 km) |
