| Opatija to Karkkila | 1,125.59 mi (1,811.47 km) |
| Opatija to Kauhajoki | 1,222.08 mi (1,966.74 km) |
| Opatija to Kauhava | 1,274.88 mi (2,051.73 km) |
| Opatija to Kauniainen | 1,113.86 mi (1,792.58 km) |
| Opatija to Kemi | 1,461.29 mi (2,351.71 km) |
| Opatija to Kemijarvi | 1,554.46 mi (2,501.65 km) |
| Opatija to Kempele | 1,418.42 mi (2,282.73 km) |
| Opatija to Kerava | 1,130.89 mi (1,820.00 km) |
| Opatija to Keuruu | 1,240.53 mi (1,996.44 km) |
| Opatija to Kiiminki | 1,435.51 mi (2,310.23 km) |
| Opatija to Kirkkonummi | 1,102.76 mi (1,774.72 km) |
| Opatija to Kitee | 1,318.98 mi (2,122.69 km) |
| Opatija to Kiuruvesi | 1,353.11 mi (2,177.62 km) |
| Opatija to Kivisto | 1,122.18 mi (1,805.97 km) |
| Opatija to Klaukkala | 1,124.26 mi (1,809.33 km) |
