| Smithville to Devnya | 5,682.61 mi (9,145.28 km) |
| Smithville to Dimitrovgrad | 5,675.90 mi (9,134.48 km) |
| Smithville to Dobrich | 5,673.26 mi (9,130.23 km) |
| Smithville to Dospat | 5,646.04 mi (9,086.43 km) |
| Smithville to Dupnitsa | 5,578.14 mi (8,977.15 km) |
| Smithville to Elhovo | 5,703.16 mi (9,178.35 km) |
| Smithville to Etropole | 5,580.72 mi (8,981.30 km) |
| Smithville to Gabrovo | 5,625.13 mi (9,052.77 km) |
| Smithville to Gorna Oryahovitsa | 5,624.09 mi (9,051.10 km) |
| Smithville to Gotse Delchev | 5,634.86 mi (9,068.44 km) |
| Smithville to Harmanli | 5,692.24 mi (9,160.77 km) |
| Smithville to Haskovo | 5,680.70 mi (9,142.21 km) |
| Smithville to Ihtiman | 5,594.15 mi (9,002.91 km) |
| Smithville to Isperih | 5,632.36 mi (9,064.41 km) |
| Smithville to Kardzhali | 5,688.19 mi (9,154.25 km) |
