| Klamath Falls to Karlovo | 6,216.33 mi (10,004.21 km) |
| Klamath Falls to Karnobat | 6,260.79 mi (10,075.76 km) |
| Klamath Falls to Kavarna | 6,235.26 mi (10,034.68 km) |
| Klamath Falls to Kazanlak | 6,230.22 mi (10,026.57 km) |
| Klamath Falls to Knezha | 6,147.36 mi (9,893.22 km) |
| Klamath Falls to Kostinbrod | 6,171.84 mi (9,932.62 km) |
| Klamath Falls to Kozloduy | 6,122.27 mi (9,852.84 km) |
| Klamath Falls to Kyustendil | 6,193.54 mi (9,967.55 km) |
| Klamath Falls to Levski | 6,177.36 mi (9,941.51 km) |
| Klamath Falls to Lom | 6,109.18 mi (9,831.78 km) |
| Klamath Falls to Lovech | 6,183.49 mi (9,951.37 km) |
| Klamath Falls to Lukovit | 6,167.96 mi (9,926.37 km) |
| Klamath Falls to Lyaskovets | 6,206.02 mi (9,987.63 km) |
| Klamath Falls to Mezdra | 6,161.28 mi (9,915.63 km) |
| Klamath Falls to Momchilgrad | 6,299.13 mi (10,137.47 km) |
