| Grenzach-Wyhlen to Devnya | 1,008.17 mi (1,622.49 km) |
| Grenzach-Wyhlen to Dimitrovgrad | 955.32 mi (1,537.43 km) |
| Grenzach-Wyhlen to Dobrich | 1,010.79 mi (1,626.72 km) |
| Grenzach-Wyhlen to Dospat | 906.22 mi (1,458.42 km) |
| Grenzach-Wyhlen to Dupnitsa | 838.07 mi (1,348.74 km) |
| Grenzach-Wyhlen to Elhovo | 994.76 mi (1,600.92 km) |
| Grenzach-Wyhlen to Etropole | 857.76 mi (1,380.43 km) |
| Grenzach-Wyhlen to Gabrovo | 916.69 mi (1,475.27 km) |
| Grenzach-Wyhlen to Gorna Oryahovitsa | 925.21 mi (1,488.99 km) |
| Grenzach-Wyhlen to Gotse Delchev | 890.49 mi (1,433.10 km) |
| Grenzach-Wyhlen to Harmanli | 972.69 mi (1,565.40 km) |
| Grenzach-Wyhlen to Haskovo | 957.84 mi (1,541.49 km) |
| Grenzach-Wyhlen to Ihtiman | 862.78 mi (1,388.50 km) |
| Grenzach-Wyhlen to Isperih | 960.68 mi (1,546.06 km) |
| Grenzach-Wyhlen to Kardzhali | 958.92 mi (1,543.23 km) |
