| Aiken to Devnya | 5,511.89 mi (8,870.53 km) |
| Aiken to Dimitrovgrad | 5,479.29 mi (8,818.07 km) |
| Aiken to Dobrich | 5,508.04 mi (8,864.33 km) |
| Aiken to Dospat | 5,435.32 mi (8,747.31 km) |
| Aiken to Dupnitsa | 5,366.85 mi (8,637.11 km) |
| Aiken to Elhovo | 5,514.52 mi (8,874.76 km) |
| Aiken to Etropole | 5,381.45 mi (8,660.60 km) |
| Aiken to Gabrovo | 5,435.27 mi (8,747.23 km) |
| Aiken to Gorna Oryahovitsa | 5,439.56 mi (8,754.13 km) |
| Aiken to Gotse Delchev | 5,420.29 mi (8,723.12 km) |
| Aiken to Harmanli | 5,496.50 mi (8,845.76 km) |
| Aiken to Haskovo | 5,482.64 mi (8,823.45 km) |
| Aiken to Ihtiman | 5,389.41 mi (8,673.41 km) |
| Aiken to Isperih | 5,461.76 mi (8,789.85 km) |
| Aiken to Kardzhali | 5,485.76 mi (8,828.48 km) |
