| Krefeld to Devnya | 1,127.14 mi (1,813.95 km) |
| Krefeld to Dimitrovgrad | 1,101.51 mi (1,772.71 km) |
| Krefeld to Dobrich | 1,123.49 mi (1,808.08 km) |
| Krefeld to Dospat | 1,066.95 mi (1,717.10 km) |
| Krefeld to Dupnitsa | 998.78 mi (1,607.38 km) |
| Krefeld to Elhovo | 1,133.30 mi (1,823.88 km) |
| Krefeld to Etropole | 1,004.66 mi (1,616.84 km) |
| Krefeld to Gabrovo | 1,054.13 mi (1,696.46 km) |
| Krefeld to Gorna Oryahovitsa | 1,056.65 mi (1,700.52 km) |
| Krefeld to Gotse Delchev | 1,055.26 mi (1,698.27 km) |
| Krefeld to Harmanli | 1,118.35 mi (1,799.80 km) |
| Krefeld to Haskovo | 1,105.67 mi (1,779.40 km) |
| Krefeld to Ihtiman | 1,016.24 mi (1,635.48 km) |
| Krefeld to Isperih | 1,077.00 mi (1,733.27 km) |
| Krefeld to Kardzhali | 1,111.45 mi (1,788.71 km) |
