| Healdsburg to Devnya | 6,487.02 mi (10,439.85 km) |
| Healdsburg to Dimitrovgrad | 6,521.16 mi (10,494.79 km) |
| Healdsburg to Dobrich | 6,469.85 mi (10,412.22 km) |
| Healdsburg to Dospat | 6,515.42 mi (10,485.56 km) |
| Healdsburg to Dupnitsa | 6,453.83 mi (10,386.43 km) |
| Healdsburg to Elhovo | 6,533.81 mi (10,515.16 km) |
| Healdsburg to Etropole | 6,437.85 mi (10,360.72 km) |
| Healdsburg to Gabrovo | 6,464.13 mi (10,403.01 km) |
| Healdsburg to Gorna Oryahovitsa | 6,454.94 mi (10,388.22 km) |
| Healdsburg to Gotse Delchev | 6,511.02 mi (10,478.47 km) |
| Healdsburg to Harmanli | 6,534.81 mi (10,516.76 km) |
| Healdsburg to Haskovo | 6,527.81 mi (10,505.50 km) |
| Healdsburg to Ihtiman | 6,458.56 mi (10,394.05 km) |
| Healdsburg to Isperih | 6,440.85 mi (10,365.55 km) |
| Healdsburg to Kardzhali | 6,541.41 mi (10,527.39 km) |
