| Dubuque to Devnya | 5,388.49 mi (8,671.93 km) |
| Dubuque to Dimitrovgrad | 5,381.35 mi (8,660.45 km) |
| Dubuque to Dobrich | 5,379.27 mi (8,657.09 km) |
| Dubuque to Dospat | 5,351.39 mi (8,612.23 km) |
| Dubuque to Dupnitsa | 5,283.48 mi (8,502.94 km) |
| Dubuque to Elhovo | 5,408.72 mi (8,704.49 km) |
| Dubuque to Etropole | 5,286.12 mi (8,507.20 km) |
| Dubuque to Gabrovo | 5,330.65 mi (8,578.85 km) |
| Dubuque to Gorna Oryahovitsa | 5,329.68 mi (8,577.30 km) |
| Dubuque to Gotse Delchev | 5,340.20 mi (8,594.22 km) |
| Dubuque to Harmanli | 5,397.70 mi (8,686.76 km) |
| Dubuque to Haskovo | 5,386.14 mi (8,668.16 km) |
| Dubuque to Ihtiman | 5,299.52 mi (8,528.75 km) |
| Dubuque to Isperih | 5,338.22 mi (8,591.03 km) |
| Dubuque to Kardzhali | 5,393.59 mi (8,680.14 km) |
