| Healdsburg to Karlovo | 6,467.06 mi (10,407.73 km) |
| Healdsburg to Karnobat | 6,512.63 mi (10,481.06 km) |
| Healdsburg to Kavarna | 6,487.90 mi (10,441.27 km) |
| Healdsburg to Kazanlak | 6,481.26 mi (10,430.59 km) |
| Healdsburg to Knezha | 6,397.99 mi (10,296.57 km) |
| Healdsburg to Kostinbrod | 6,421.73 mi (10,334.78 km) |
| Healdsburg to Kozloduy | 6,372.81 mi (10,256.04 km) |
| Healdsburg to Kyustendil | 6,442.90 mi (10,368.84 km) |
| Healdsburg to Levski | 6,428.51 mi (10,345.68 km) |
| Healdsburg to Lom | 6,359.46 mi (10,234.57 km) |
| Healdsburg to Lovech | 6,434.34 mi (10,355.07 km) |
| Healdsburg to Lukovit | 6,418.53 mi (10,329.62 km) |
| Healdsburg to Lyaskovets | 6,457.38 mi (10,392.15 km) |
| Healdsburg to Mezdra | 6,411.58 mi (10,318.44 km) |
| Healdsburg to Momchilgrad | 6,549.82 mi (10,540.92 km) |
