| Altadena to Smolyan | 6,694.80 mi (10,774.24 km) |
| Altadena to Sofia | 6,592.63 mi (10,609.81 km) |
| Altadena to Sopot | 6,632.37 mi (10,673.77 km) |
| Altadena to Sozopol | 6,719.34 mi (10,813.73 km) |
| Altadena to Sredets | 6,711.38 mi (10,800.92 km) |
| Altadena to Stamboliyski | 6,657.66 mi (10,714.46 km) |
| Altadena to Stara Zagora | 6,668.13 mi (10,731.32 km) |
| Altadena to Svilengrad | 6,722.09 mi (10,818.16 km) |
| Altadena to Svishtov | 6,589.53 mi (10,604.82 km) |
| Altadena to Targovishte | 6,641.81 mi (10,688.96 km) |
| Altadena to Teteven | 6,604.10 mi (10,628.27 km) |
| Altadena to Troyan | 6,617.58 mi (10,649.97 km) |
| Altadena to Tryavna | 6,638.30 mi (10,683.32 km) |
| Altadena to Tutrakan | 6,594.12 mi (10,612.21 km) |
| Altadena to Varna | 6,675.57 mi (10,743.30 km) |
