| Costa Mesa to Karlovo | 6,661.06 mi (10,719.93 km) |
| Costa Mesa to Karnobat | 6,716.41 mi (10,809.02 km) |
| Costa Mesa to Kavarna | 6,700.08 mi (10,782.74 km) |
| Costa Mesa to Kazanlak | 6,677.85 mi (10,746.96 km) |
| Costa Mesa to Knezha | 6,591.52 mi (10,608.03 km) |
| Costa Mesa to Kostinbrod | 6,609.15 mi (10,636.40 km) |
| Costa Mesa to Kozloduy | 6,565.72 mi (10,566.51 km) |
| Costa Mesa to Kyustendil | 6,626.12 mi (10,663.70 km) |
| Costa Mesa to Levski | 6,626.26 mi (10,663.94 km) |
| Costa Mesa to Lom | 6,550.34 mi (10,541.76 km) |
| Costa Mesa to Lovech | 6,629.51 mi (10,669.16 km) |
| Costa Mesa to Lukovit | 6,611.45 mi (10,640.11 km) |
| Costa Mesa to Lyaskovets | 6,656.90 mi (10,713.24 km) |
| Costa Mesa to Mezdra | 6,602.26 mi (10,625.32 km) |
| Costa Mesa to Momchilgrad | 6,743.06 mi (10,851.91 km) |
