| Dokkum to Smolyan | 1,185.70 mi (1,908.20 km) |
| Dokkum to Sofia | 1,081.43 mi (1,740.39 km) |
| Dokkum to Sopot | 1,132.34 mi (1,822.32 km) |
| Dokkum to Sozopol | 1,248.59 mi (2,009.41 km) |
| Dokkum to Sredets | 1,233.77 mi (1,985.56 km) |
| Dokkum to Stamboliyski | 1,151.38 mi (1,852.96 km) |
| Dokkum to Stara Zagora | 1,174.59 mi (1,890.33 km) |
| Dokkum to Svilengrad | 1,227.52 mi (1,975.50 km) |
| Dokkum to Svishtov | 1,105.75 mi (1,779.53 km) |
| Dokkum to Targovishte | 1,167.89 mi (1,879.53 km) |
| Dokkum to Teteven | 1,102.16 mi (1,773.75 km) |
| Dokkum to Troyan | 1,119.42 mi (1,801.53 km) |
| Dokkum to Tryavna | 1,147.70 mi (1,847.04 km) |
| Dokkum to Tutrakan | 1,131.58 mi (1,821.10 km) |
| Dokkum to Varna | 1,218.41 mi (1,960.84 km) |
