| Oslo to Karlovo | 1,332.82 mi (2,144.97 km) |
| Oslo to Karnobat | 1,376.67 mi (2,215.54 km) |
| Oslo to Kavarna | 1,356.21 mi (2,182.61 km) |
| Oslo to Kazanlak | 1,345.84 mi (2,165.91 km) |
| Oslo to Knezha | 1,264.35 mi (2,034.77 km) |
| Oslo to Kostinbrod | 1,293.10 mi (2,081.05 km) |
| Oslo to Kozloduy | 1,239.71 mi (1,995.13 km) |
| Oslo to Kyustendil | 1,319.04 mi (2,122.79 km) |
| Oslo to Levski | 1,292.82 mi (2,080.59 km) |
| Oslo to Lom | 1,228.07 mi (1,976.39 km) |
| Oslo to Lovech | 1,299.63 mi (2,091.55 km) |
| Oslo to Lukovit | 1,285.17 mi (2,068.28 km) |
| Oslo to Lyaskovets | 1,321.28 mi (2,126.40 km) |
| Oslo to Mezdra | 1,279.94 mi (2,059.86 km) |
| Oslo to Momchilgrad | 1,415.65 mi (2,278.27 km) |
