| Olonne-sur-Mer to Karlovo | 1,328.55 mi (2,138.09 km) |
| Olonne-sur-Mer to Karnobat | 1,432.20 mi (2,304.91 km) |
| Olonne-sur-Mer to Kavarna | 1,477.62 mi (2,378.00 km) |
| Olonne-sur-Mer to Kazanlak | 1,357.37 mi (2,184.48 km) |
| Olonne-sur-Mer to Knezha | 1,274.22 mi (2,050.66 km) |
| Olonne-sur-Mer to Kostinbrod | 1,248.80 mi (2,009.75 km) |
| Olonne-sur-Mer to Kozloduy | 1,251.51 mi (2,014.11 km) |
| Olonne-sur-Mer to Kyustendil | 1,236.89 mi (1,990.58 km) |
| Olonne-sur-Mer to Levski | 1,327.08 mi (2,135.72 km) |
| Olonne-sur-Mer to Lom | 1,227.06 mi (1,974.76 km) |
| Olonne-sur-Mer to Lovech | 1,312.57 mi (2,112.38 km) |
| Olonne-sur-Mer to Lukovit | 1,284.91 mi (2,067.86 km) |
| Olonne-sur-Mer to Lyaskovets | 1,360.88 mi (2,190.12 km) |
| Olonne-sur-Mer to Mezdra | 1,263.88 mi (2,034.01 km) |
| Olonne-sur-Mer to Momchilgrad | 1,386.52 mi (2,231.39 km) |
