| Orthez to Karlovo | 1,287.35 mi (2,071.78 km) |
| Orthez to Karnobat | 1,395.82 mi (2,246.35 km) |
| Orthez to Kavarna | 1,452.09 mi (2,336.92 km) |
| Orthez to Kazanlak | 1,317.25 mi (2,119.91 km) |
| Orthez to Knezha | 1,241.11 mi (1,997.37 km) |
| Orthez to Kostinbrod | 1,205.82 mi (1,940.58 km) |
| Orthez to Kozloduy | 1,221.03 mi (1,965.05 km) |
| Orthez to Kyustendil | 1,186.35 mi (1,909.25 km) |
| Orthez to Levski | 1,294.58 mi (2,083.42 km) |
| Orthez to Lom | 1,196.13 mi (1,924.99 km) |
| Orthez to Lovech | 1,276.61 mi (2,054.51 km) |
| Orthez to Lukovit | 1,248.51 mi (2,009.28 km) |
| Orthez to Lyaskovets | 1,326.66 mi (2,135.05 km) |
| Orthez to Mezdra | 1,225.89 mi (1,972.87 km) |
| Orthez to Momchilgrad | 1,335.05 mi (2,148.56 km) |
