| Bithlo to Smolyan | 5,668.76 mi (9,122.99 km) |
| Bithlo to Sofia | 5,568.89 mi (8,962.27 km) |
| Bithlo to Sopot | 5,632.57 mi (9,064.74 km) |
| Bithlo to Sozopol | 5,768.17 mi (9,282.98 km) |
| Bithlo to Sredets | 5,749.30 mi (9,252.60 km) |
| Bithlo to Stamboliyski | 5,641.66 mi (9,079.38 km) |
| Bithlo to Stara Zagora | 5,679.43 mi (9,140.16 km) |
| Bithlo to Svilengrad | 5,727.80 mi (9,218.01 km) |
| Bithlo to Svishtov | 5,623.52 mi (9,050.18 km) |
| Bithlo to Targovishte | 5,689.43 mi (9,156.25 km) |
| Bithlo to Teteven | 5,602.06 mi (9,015.65 km) |
| Bithlo to Troyan | 5,622.75 mi (9,048.94 km) |
| Bithlo to Tryavna | 5,657.15 mi (9,104.31 km) |
| Bithlo to Tutrakan | 5,661.24 mi (9,110.89 km) |
| Bithlo to Varna | 5,747.07 mi (9,249.02 km) |
