| Viersen to Devnya | 1,132.02 mi (1,821.81 km) |
| Viersen to Dimitrovgrad | 1,105.49 mi (1,779.11 km) |
| Viersen to Dobrich | 1,128.55 mi (1,816.23 km) |
| Viersen to Dospat | 1,070.39 mi (1,722.62 km) |
| Viersen to Dupnitsa | 1,002.15 mi (1,612.81 km) |
| Viersen to Elhovo | 1,137.57 mi (1,830.74 km) |
| Viersen to Etropole | 1,008.53 mi (1,623.07 km) |
| Viersen to Gabrovo | 1,058.37 mi (1,703.27 km) |
| Viersen to Gorna Oryahovitsa | 1,061.09 mi (1,707.65 km) |
| Viersen to Gotse Delchev | 1,058.53 mi (1,703.54 km) |
| Viersen to Harmanli | 1,122.35 mi (1,806.26 km) |
| Viersen to Haskovo | 1,109.59 mi (1,785.72 km) |
| Viersen to Ihtiman | 1,019.89 mi (1,641.36 km) |
| Viersen to Isperih | 1,081.92 mi (1,741.19 km) |
| Viersen to Kardzhali | 1,115.22 mi (1,794.77 km) |
