| Halden to Smolyan | 1,339.21 mi (2,155.26 km) |
| Halden to Sofia | 1,242.47 mi (1,999.57 km) |
| Halden to Sopot | 1,271.47 mi (2,046.24 km) |
| Halden to Sozopol | 1,346.63 mi (2,167.18 km) |
| Halden to Sredets | 1,339.98 mi (2,156.48 km) |
| Halden to Stamboliyski | 1,300.65 mi (2,093.19 km) |
| Halden to Stara Zagora | 1,302.77 mi (2,096.61 km) |
| Halden to Svilengrad | 1,356.16 mi (2,182.53 km) |
| Halden to Svishtov | 1,221.70 mi (1,966.14 km) |
| Halden to Targovishte | 1,270.41 mi (2,044.53 km) |
| Halden to Teteven | 1,245.29 mi (2,004.10 km) |
| Halden to Troyan | 1,255.90 mi (2,021.17 km) |
| Halden to Tryavna | 1,272.22 mi (2,047.43 km) |
| Halden to Tutrakan | 1,221.29 mi (1,965.48 km) |
| Halden to Varna | 1,301.80 mi (2,095.05 km) |
