| Henderson to Smolyan | 6,501.53 mi (10,463.20 km) |
| Henderson to Sofia | 6,398.88 mi (10,298.00 km) |
| Henderson to Sopot | 6,440.08 mi (10,364.30 km) |
| Henderson to Sozopol | 6,530.15 mi (10,509.27 km) |
| Henderson to Sredets | 6,521.55 mi (10,495.43 km) |
| Henderson to Stamboliyski | 6,464.68 mi (10,403.90 km) |
| Henderson to Stara Zagora | 6,476.63 mi (10,423.13 km) |
| Henderson to Svilengrad | 6,530.63 mi (10,510.03 km) |
| Henderson to Svishtov | 6,398.73 mi (10,297.76 km) |
| Henderson to Targovishte | 6,452.07 mi (10,383.60 km) |
| Henderson to Teteven | 6,411.52 mi (10,318.34 km) |
| Henderson to Troyan | 6,425.46 mi (10,340.77 km) |
| Henderson to Tryavna | 6,447.01 mi (10,375.47 km) |
| Henderson to Tutrakan | 6,405.13 mi (10,308.06 km) |
| Henderson to Varna | 6,487.34 mi (10,440.37 km) |
