| Birkerod to Smolyan | 1,128.55 mi (1,816.22 km) |
| Birkerod to Sofia | 1,029.09 mi (1,656.15 km) |
| Birkerod to Sopot | 1,063.40 mi (1,711.38 km) |
| Birkerod to Sozopol | 1,150.34 mi (1,851.29 km) |
| Birkerod to Sredets | 1,141.30 mi (1,836.74 km) |
| Birkerod to Stamboliyski | 1,090.53 mi (1,755.05 km) |
| Birkerod to Stara Zagora | 1,097.78 mi (1,766.71 km) |
| Birkerod to Svilengrad | 1,151.68 mi (1,853.45 km) |
| Birkerod to Svishtov | 1,018.81 mi (1,639.61 km) |
| Birkerod to Targovishte | 1,071.85 mi (1,724.98 km) |
| Birkerod to Teteven | 1,035.94 mi (1,667.19 km) |
| Birkerod to Troyan | 1,048.27 mi (1,687.03 km) |
| Birkerod to Tryavna | 1,067.78 mi (1,718.42 km) |
| Birkerod to Tutrakan | 1,025.69 mi (1,650.69 km) |
| Birkerod to Varna | 1,109.25 mi (1,785.16 km) |
