| Alfonsine to Smolyan | 669.01 mi (1,076.67 km) |
| Alfonsine to Sofia | 577.43 mi (929.29 km) |
| Alfonsine to Sopot | 647.73 mi (1,042.42 km) |
| Alfonsine to Sozopol | 796.69 mi (1,282.15 km) |
| Alfonsine to Sredets | 773.42 mi (1,244.70 km) |
| Alfonsine to Stamboliyski | 647.77 mi (1,042.49 km) |
| Alfonsine to Stara Zagora | 695.90 mi (1,119.94 km) |
| Alfonsine to Svilengrad | 736.98 mi (1,186.06 km) |
| Alfonsine to Svishtov | 662.45 mi (1,066.12 km) |
| Alfonsine to Targovishte | 728.00 mi (1,171.60 km) |
| Alfonsine to Teteven | 619.28 mi (996.63 km) |
| Alfonsine to Troyan | 641.92 mi (1,033.06 km) |
| Alfonsine to Tryavna | 680.64 mi (1,095.38 km) |
| Alfonsine to Tutrakan | 720.34 mi (1,159.27 km) |
| Alfonsine to Varna | 794.17 mi (1,278.09 km) |
