| Casa de Oro-Mount Helix to Karlovo | 6,691.89 mi (10,769.55 km) |
| Casa de Oro-Mount Helix to Karnobat | 6,749.10 mi (10,861.63 km) |
| Casa de Oro-Mount Helix to Kavarna | 6,734.44 mi (10,838.03 km) |
| Casa de Oro-Mount Helix to Kazanlak | 6,709.17 mi (10,797.36 km) |
| Casa de Oro-Mount Helix to Knezha | 6,622.35 mi (10,657.64 km) |
| Casa de Oro-Mount Helix to Kostinbrod | 6,638.76 mi (10,684.05 km) |
| Casa de Oro-Mount Helix to Kozloduy | 6,596.46 mi (10,615.97 km) |
| Casa de Oro-Mount Helix to Kyustendil | 6,654.88 mi (10,710.00 km) |
| Casa de Oro-Mount Helix to Levski | 6,657.87 mi (10,714.81 km) |
| Casa de Oro-Mount Helix to Lom | 6,580.70 mi (10,590.61 km) |
| Casa de Oro-Mount Helix to Lovech | 6,660.61 mi (10,719.21 km) |
| Casa de Oro-Mount Helix to Lukovit | 6,642.14 mi (10,689.49 km) |
| Casa de Oro-Mount Helix to Lyaskovets | 6,688.82 mi (10,764.61 km) |
| Casa de Oro-Mount Helix to Mezdra | 6,632.52 mi (10,674.01 km) |
| Casa de Oro-Mount Helix to Momchilgrad | 6,773.65 mi (10,901.13 km) |
