| Kennewick to Karlovo | 5,912.79 mi (9,515.72 km) |
| Kennewick to Karnobat | 5,957.39 mi (9,587.49 km) |
| Kennewick to Kavarna | 5,932.13 mi (9,546.85 km) |
| Kennewick to Kazanlak | 5,926.70 mi (9,538.11 km) |
| Kennewick to Knezha | 5,843.82 mi (9,404.72 km) |
| Kennewick to Kostinbrod | 5,868.32 mi (9,444.15 km) |
| Kennewick to Kozloduy | 5,818.73 mi (9,364.33 km) |
| Kennewick to Kyustendil | 5,890.07 mi (9,479.16 km) |
| Kennewick to Levski | 5,873.85 mi (9,453.05 km) |
| Kennewick to Lom | 5,805.64 mi (9,343.28 km) |
| Kennewick to Lovech | 5,879.96 mi (9,462.88 km) |
| Kennewick to Lukovit | 5,864.42 mi (9,437.87 km) |
| Kennewick to Lyaskovets | 5,902.54 mi (9,499.22 km) |
| Kennewick to Mezdra | 5,857.74 mi (9,427.13 km) |
| Kennewick to Momchilgrad | 5,995.59 mi (9,648.97 km) |
