| Blackrock to Devnya | 1,681.16 mi (2,705.56 km) |
| Blackrock to Dimitrovgrad | 1,651.28 mi (2,657.47 km) |
| Blackrock to Dobrich | 1,677.79 mi (2,700.14 km) |
| Blackrock to Dospat | 1,612.14 mi (2,594.49 km) |
| Blackrock to Dupnitsa | 1,543.57 mi (2,484.14 km) |
| Blackrock to Elhovo | 1,684.87 mi (2,711.54 km) |
| Blackrock to Etropole | 1,553.76 mi (2,500.54 km) |
| Blackrock to Gabrovo | 1,605.60 mi (2,583.97 km) |
| Blackrock to Gorna Oryahovitsa | 1,609.16 mi (2,589.69 km) |
| Blackrock to Gotse Delchev | 1,598.86 mi (2,573.11 km) |
| Blackrock to Harmanli | 1,668.32 mi (2,684.90 km) |
| Blackrock to Haskovo | 1,655.04 mi (2,663.53 km) |
| Blackrock to Ihtiman | 1,563.56 mi (2,516.31 km) |
| Blackrock to Isperih | 1,631.10 mi (2,625.01 km) |
| Blackrock to Kardzhali | 1,659.55 mi (2,670.79 km) |
