| Cities | Distance |
|---|---|
| Trets to Kobarid | 432.03 mi (695.28 km) |
| Trets to Kobilje | 567.86 mi (913.89 km) |
| Trets to Kocevje | 476.21 mi (766.38 km) |
| Trets to Komen | 428.75 mi (690.01 km) |
| Trets to Komenda | 473.56 mi (762.12 km) |
| Trets to Koper | 422.15 mi (679.38 km) |
| Trets to Kostanjevica na Krki | 506.24 mi (814.71 km) |
| Trets to Kostel | 476.22 mi (766.40 km) |
| Trets to Kozje | 516.84 mi (831.77 km) |
| Trets to Kranj | 466.51 mi (750.77 km) |
| Trets to Kranjska Gora | 447.93 mi (720.87 km) |
| Trets to Krizevci | 553.68 mi (891.06 km) |
| Trets to Krsko | 510.90 mi (822.22 km) |
| Trets to Kuzma | 557.56 mi (897.31 km) |
| Trets to Lasko | 503.95 mi (811.02 km) |