| Troisdorf to Devnya | 1,090.37 mi (1,754.78 km) |
| Troisdorf to Dimitrovgrad | 1,062.20 mi (1,709.44 km) |
| Troisdorf to Dobrich | 1,087.33 mi (1,749.89 km) |
| Troisdorf to Dospat | 1,026.42 mi (1,651.86 km) |
| Troisdorf to Dupnitsa | 958.12 mi (1,541.95 km) |
| Troisdorf to Elhovo | 1,094.72 mi (1,761.78 km) |
| Troisdorf to Etropole | 965.09 mi (1,553.17 km) |
| Troisdorf to Gabrovo | 1,015.48 mi (1,634.26 km) |
| Troisdorf to Gorna Oryahovitsa | 1,018.55 mi (1,639.19 km) |
| Troisdorf to Gotse Delchev | 1,014.40 mi (1,632.52 km) |
| Troisdorf to Harmanli | 1,079.11 mi (1,736.66 km) |
| Troisdorf to Haskovo | 1,066.23 mi (1,715.93 km) |
| Troisdorf to Ihtiman | 976.17 mi (1,571.00 km) |
| Troisdorf to Isperih | 1,040.37 mi (1,674.32 km) |
| Troisdorf to Kardzhali | 1,071.64 mi (1,724.63 km) |
