| Basford to Smolyan | 1,433.43 mi (2,306.88 km) |
| Basford to Sofia | 1,329.75 mi (2,140.02 km) |
| Basford to Sopot | 1,386.97 mi (2,232.11 km) |
| Basford to Sozopol | 1,513.35 mi (2,435.50 km) |
| Basford to Sredets | 1,496.41 mi (2,408.25 km) |
| Basford to Stamboliyski | 1,401.77 mi (2,255.93 km) |
| Basford to Stara Zagora | 1,431.72 mi (2,304.14 km) |
| Basford to Svilengrad | 1,483.03 mi (2,386.71 km) |
| Basford to Svishtov | 1,368.78 mi (2,202.85 km) |
| Basford to Targovishte | 1,433.27 mi (2,306.63 km) |
| Basford to Teteven | 1,356.34 mi (2,182.82 km) |
| Basford to Troyan | 1,375.37 mi (2,213.45 km) |
| Basford to Tryavna | 1,406.80 mi (2,264.03 km) |
| Basford to Tutrakan | 1,401.50 mi (2,255.49 km) |
| Basford to Varna | 1,488.00 mi (2,394.71 km) |
