| Barstow to Karlovo | 6,564.77 mi (10,564.98 km) |
| Barstow to Karnobat | 6,620.32 mi (10,654.38 km) |
| Barstow to Kavarna | 6,604.21 mi (10,628.44 km) |
| Barstow to Kazanlak | 6,581.61 mi (10,592.08 km) |
| Barstow to Knezha | 6,495.24 mi (10,453.08 km) |
| Barstow to Kostinbrod | 6,512.77 mi (10,481.30 km) |
| Barstow to Kozloduy | 6,469.43 mi (10,411.54 km) |
| Barstow to Kyustendil | 6,529.69 mi (10,508.52 km) |
| Barstow to Levski | 6,530.05 mi (10,509.10 km) |
| Barstow to Lom | 6,454.02 mi (10,386.74 km) |
| Barstow to Lovech | 6,533.25 mi (10,514.25 km) |
| Barstow to Lukovit | 6,515.16 mi (10,485.13 km) |
| Barstow to Lyaskovets | 6,560.72 mi (10,558.46 km) |
| Barstow to Mezdra | 6,505.93 mi (10,470.29 km) |
| Barstow to Momchilgrad | 6,646.76 mi (10,696.92 km) |
