| Geilenkirchen to Smolyan | 1,093.84 mi (1,760.36 km) |
| Geilenkirchen to Sofia | 990.07 mi (1,593.36 km) |
| Geilenkirchen to Sopot | 1,047.24 mi (1,685.36 km) |
| Geilenkirchen to Sozopol | 1,174.68 mi (1,890.47 km) |
| Geilenkirchen to Sredets | 1,157.38 mi (1,862.62 km) |
| Geilenkirchen to Stamboliyski | 1,062.03 mi (1,709.17 km) |
| Geilenkirchen to Stara Zagora | 1,092.10 mi (1,757.57 km) |
| Geilenkirchen to Svilengrad | 1,143.31 mi (1,839.97 km) |
| Geilenkirchen to Svishtov | 1,029.98 mi (1,657.59 km) |
| Geilenkirchen to Targovishte | 1,094.86 mi (1,762.00 km) |
| Geilenkirchen to Teteven | 1,016.60 mi (1,636.07 km) |
| Geilenkirchen to Troyan | 1,035.70 mi (1,666.80 km) |
| Geilenkirchen to Tryavna | 1,067.37 mi (1,717.77 km) |
| Geilenkirchen to Tutrakan | 1,064.46 mi (1,713.08 km) |
| Geilenkirchen to Varna | 1,150.66 mi (1,851.81 km) |
