| Walnut Creek to Karlovo | 6,494.83 mi (10,452.42 km) |
| Walnut Creek to Karnobat | 6,541.94 mi (10,528.24 km) |
| Walnut Creek to Kavarna | 6,518.50 mi (10,490.51 km) |
| Walnut Creek to Kazanlak | 6,509.44 mi (10,475.94 km) |
| Walnut Creek to Knezha | 6,425.65 mi (10,341.08 km) |
| Walnut Creek to Kostinbrod | 6,448.46 mi (10,377.79 km) |
| Walnut Creek to Kozloduy | 6,400.35 mi (10,300.37 km) |
| Walnut Creek to Kyustendil | 6,468.99 mi (10,410.84 km) |
| Walnut Creek to Levski | 6,456.83 mi (10,391.27 km) |
| Walnut Creek to Lom | 6,386.68 mi (10,278.37 km) |
| Walnut Creek to Lovech | 6,462.27 mi (10,400.02 km) |
| Walnut Creek to Lukovit | 6,446.10 mi (10,374.00 km) |
| Walnut Creek to Lyaskovets | 6,486.00 mi (10,438.21 km) |
| Walnut Creek to Mezdra | 6,438.80 mi (10,362.25 km) |
| Walnut Creek to Momchilgrad | 6,577.53 mi (10,585.52 km) |
