| Powell to Smolyan | 5,203.56 mi (8,374.31 km) |
| Powell to Sofia | 5,100.03 mi (8,207.70 km) |
| Powell to Sopot | 5,157.01 mi (8,299.41 km) |
| Powell to Sozopol | 5,279.63 mi (8,496.74 km) |
| Powell to Sredets | 5,263.95 mi (8,471.51 km) |
| Powell to Stamboliyski | 5,172.10 mi (8,323.70 km) |
| Powell to Stara Zagora | 5,201.32 mi (8,370.71 km) |
| Powell to Svilengrad | 5,253.03 mi (8,453.93 km) |
| Powell to Svishtov | 5,135.91 mi (8,265.45 km) |
| Powell to Targovishte | 5,199.03 mi (8,367.03 km) |
| Powell to Teteven | 5,126.42 mi (8,250.18 km) |
| Powell to Troyan | 5,145.16 mi (8,280.34 km) |
| Powell to Tryavna | 5,175.76 mi (8,329.59 km) |
| Powell to Tutrakan | 5,163.40 mi (8,309.69 km) |
| Powell to Varna | 5,250.23 mi (8,449.43 km) |
