| Walla Walla to Karlovo | 5,903.36 mi (9,500.53 km) |
| Walla Walla to Karnobat | 5,948.98 mi (9,573.96 km) |
| Walla Walla to Kavarna | 5,924.58 mi (9,534.70 km) |
| Walla Walla to Kazanlak | 5,917.54 mi (9,523.36 km) |
| Walla Walla to Knezha | 5,834.30 mi (9,389.40 km) |
| Walla Walla to Kostinbrod | 5,858.20 mi (9,427.86 km) |
| Walla Walla to Kozloduy | 5,809.13 mi (9,348.89 km) |
| Walla Walla to Kyustendil | 5,879.54 mi (9,462.21 km) |
| Walla Walla to Levski | 5,864.78 mi (9,438.45 km) |
| Walla Walla to Lom | 5,795.83 mi (9,327.49 km) |
| Walla Walla to Lovech | 5,870.63 mi (9,447.86 km) |
| Walla Walla to Lukovit | 5,854.85 mi (9,422.46 km) |
| Walla Walla to Lyaskovets | 5,893.66 mi (9,484.93 km) |
| Walla Walla to Mezdra | 5,847.94 mi (9,411.36 km) |
| Walla Walla to Momchilgrad | 5,986.13 mi (9,633.74 km) |
