| Darby to Devnya | 4,948.37 mi (7,963.62 km) |
| Darby to Dimitrovgrad | 4,918.42 mi (7,915.43 km) |
| Darby to Dobrich | 4,944.01 mi (7,956.62 km) |
| Darby to Dospat | 4,876.10 mi (7,847.32 km) |
| Darby to Dupnitsa | 4,807.54 mi (7,736.99 km) |
| Darby to Elhovo | 4,952.82 mi (7,970.79 km) |
| Darby to Etropole | 4,820.68 mi (7,758.13 km) |
| Darby to Gabrovo | 4,873.54 mi (7,843.21 km) |
| Darby to Gorna Oryahovitsa | 4,877.27 mi (7,849.21 km) |
| Darby to Gotse Delchev | 4,861.54 mi (7,823.90 km) |
| Darby to Harmanli | 4,935.56 mi (7,943.01 km) |
| Darby to Haskovo | 4,921.95 mi (7,921.11 km) |
| Darby to Ihtiman | 4,829.32 mi (7,772.04 km) |
| Darby to Isperih | 4,898.14 mi (7,882.79 km) |
| Darby to Kardzhali | 4,925.60 mi (7,926.99 km) |
