| Shasta Lake to Smolyan | 6,390.82 mi (10,285.03 km) |
| Shasta Lake to Sofia | 6,291.32 mi (10,124.90 km) |
| Shasta Lake to Sopot | 6,324.72 mi (10,178.66 km) |
| Shasta Lake to Sozopol | 6,398.90 mi (10,298.04 km) |
| Shasta Lake to Sredets | 6,393.43 mi (10,289.22 km) |
| Shasta Lake to Stamboliyski | 6,352.67 mi (10,223.63 km) |
| Shasta Lake to Stara Zagora | 6,357.04 mi (10,230.67 km) |
| Shasta Lake to Svilengrad | 6,410.52 mi (10,316.73 km) |
| Shasta Lake to Svishtov | 6,276.11 mi (10,100.42 km) |
| Shasta Lake to Targovishte | 6,323.98 mi (10,177.47 km) |
| Shasta Lake to Teteven | 6,297.80 mi (10,135.32 km) |
| Shasta Lake to Troyan | 6,309.34 mi (10,153.90 km) |
| Shasta Lake to Tryavna | 6,326.55 mi (10,181.59 km) |
| Shasta Lake to Tutrakan | 6,273.76 mi (10,096.64 km) |
| Shasta Lake to Varna | 6,351.86 mi (10,222.33 km) |
