| Redding to Smolyan | 6,397.44 mi (10,295.69 km) |
| Redding to Sofia | 6,297.92 mi (10,135.52 km) |
| Redding to Sopot | 6,331.38 mi (10,189.37 km) |
| Redding to Sozopol | 6,405.67 mi (10,308.93 km) |
| Redding to Sredets | 6,400.17 mi (10,300.09 km) |
| Redding to Stamboliyski | 6,359.30 mi (10,234.31 km) |
| Redding to Stara Zagora | 6,363.73 mi (10,241.43 km) |
| Redding to Svilengrad | 6,417.21 mi (10,327.51 km) |
| Redding to Svishtov | 6,282.81 mi (10,111.21 km) |
| Redding to Targovishte | 6,330.73 mi (10,188.32 km) |
| Redding to Teteven | 6,304.44 mi (10,146.01 km) |
| Redding to Troyan | 6,316.00 mi (10,164.62 km) |
| Redding to Tryavna | 6,333.24 mi (10,192.36 km) |
| Redding to Tutrakan | 6,280.53 mi (10,107.53 km) |
| Redding to Varna | 6,358.66 mi (10,233.27 km) |
