| Opatija to Isparta | 987.19 mi (1,588.73 km) |
| Opatija to Istanbul | 795.01 mi (1,279.45 km) |
| Opatija to Izmir | 813.56 mi (1,309.30 km) |
| Opatija to Kadinhani | 1,041.60 mi (1,676.29 km) |
| Opatija to Kadirli | 1,252.03 mi (2,014.95 km) |
| Opatija to Kagithane | 793.73 mi (1,277.38 km) |
| Opatija to Kahramanmaras | 1,282.72 mi (2,064.34 km) |
| Opatija to Kahta | 1,354.77 mi (2,180.29 km) |
| Opatija to Kaman | 1,070.96 mi (1,723.55 km) |
| Opatija to Kangal | 1,247.85 mi (2,008.22 km) |
| Opatija to Kapakli | 739.17 mi (1,189.58 km) |
| Opatija to Karaagac | 1,284.52 mi (2,067.24 km) |
| Opatija to Karaagac | 739.43 mi (1,190.00 km) |
| Opatija to Karabuk | 962.81 mi (1,549.50 km) |
| Opatija to Karahalli | 919.04 mi (1,479.05 km) |
