| Cologne to Devnya | 1,101.59 mi (1,772.84 km) |
| Cologne to Dimitrovgrad | 1,073.89 mi (1,728.25 km) |
| Cologne to Dobrich | 1,098.44 mi (1,767.76 km) |
| Cologne to Dospat | 1,038.30 mi (1,670.98 km) |
| Cologne to Dupnitsa | 970.02 mi (1,561.10 km) |
| Cologne to Elhovo | 1,106.28 mi (1,780.39 km) |
| Cologne to Etropole | 976.82 mi (1,572.04 km) |
| Cologne to Gabrovo | 1,027.05 mi (1,652.88 km) |
| Cologne to Gorna Oryahovitsa | 1,030.02 mi (1,657.66 km) |
| Cologne to Gotse Delchev | 1,026.33 mi (1,651.71 km) |
| Cologne to Harmanli | 1,090.79 mi (1,755.45 km) |
| Cologne to Haskovo | 1,077.94 mi (1,734.77 km) |
| Cologne to Ihtiman | 987.98 mi (1,590.01 km) |
| Cologne to Isperih | 1,051.57 mi (1,692.33 km) |
| Cologne to Kardzhali | 1,083.41 mi (1,743.58 km) |
