| Adel to Smolyan | 1,473.23 mi (2,370.94 km) |
| Adel to Sofia | 1,369.22 mi (2,203.54 km) |
| Adel to Sopot | 1,424.80 mi (2,292.99 km) |
| Adel to Sozopol | 1,548.16 mi (2,491.52 km) |
| Adel to Sredets | 1,531.92 mi (2,465.39 km) |
| Adel to Stamboliyski | 1,440.81 mi (2,318.76 km) |
| Adel to Stara Zagora | 1,468.88 mi (2,363.94 km) |
| Adel to Svilengrad | 1,520.74 mi (2,447.40 km) |
| Adel to Svishtov | 1,403.99 mi (2,259.50 km) |
| Adel to Targovishte | 1,467.77 mi (2,362.15 km) |
| Adel to Teteven | 1,394.25 mi (2,243.83 km) |
| Adel to Troyan | 1,412.80 mi (2,273.67 km) |
| Adel to Tryavna | 1,443.32 mi (2,322.80 km) |
| Adel to Tutrakan | 1,434.31 mi (2,308.30 km) |
| Adel to Varna | 1,521.04 mi (2,447.88 km) |
