| Blackwells Mills to Devnya | 4,896.70 mi (7,880.47 km) |
| Blackwells Mills to Dimitrovgrad | 4,866.97 mi (7,832.64 km) |
| Blackwells Mills to Dobrich | 4,892.30 mi (7,873.40 km) |
| Blackwells Mills to Dospat | 4,824.79 mi (7,764.76 km) |
| Blackwells Mills to Dupnitsa | 4,756.23 mi (7,654.41 km) |
| Blackwells Mills to Elhovo | 4,901.30 mi (7,887.88 km) |
| Blackwells Mills to Etropole | 4,769.24 mi (7,675.35 km) |
| Blackwells Mills to Gabrovo | 4,822.02 mi (7,760.30 km) |
| Blackwells Mills to Gorna Oryahovitsa | 4,825.70 mi (7,766.22 km) |
| Blackwells Mills to Gotse Delchev | 4,810.28 mi (7,741.40 km) |
| Blackwells Mills to Harmanli | 4,884.11 mi (7,860.21 km) |
| Blackwells Mills to Haskovo | 4,870.51 mi (7,838.33 km) |
| Blackwells Mills to Ihtiman | 4,777.94 mi (7,689.35 km) |
| Blackwells Mills to Isperih | 4,846.46 mi (7,799.63 km) |
| Blackwells Mills to Kardzhali | 4,874.22 mi (7,844.29 km) |
