| Alfter to Devnya | 1,094.40 mi (1,761.27 km) |
| Alfter to Dimitrovgrad | 1,065.33 mi (1,714.48 km) |
| Alfter to Dobrich | 1,091.55 mi (1,756.69 km) |
| Alfter to Dospat | 1,029.00 mi (1,656.02 km) |
| Alfter to Dupnitsa | 960.66 mi (1,546.03 km) |
| Alfter to Elhovo | 1,098.13 mi (1,767.26 km) |
| Alfter to Etropole | 968.13 mi (1,558.05 km) |
| Alfter to Gabrovo | 1,018.87 mi (1,639.72 km) |
| Alfter to Gorna Oryahovitsa | 1,022.14 mi (1,644.97 km) |
| Alfter to Gotse Delchev | 1,016.83 mi (1,636.43 km) |
| Alfter to Harmanli | 1,082.27 mi (1,741.74 km) |
| Alfter to Haskovo | 1,069.30 mi (1,720.88 km) |
| Alfter to Ihtiman | 978.99 mi (1,575.53 km) |
| Alfter to Isperih | 1,044.45 mi (1,680.89 km) |
| Alfter to Kardzhali | 1,074.55 mi (1,729.32 km) |
