| Westerville to Smolyan | 5,199.35 mi (8,367.54 km) |
| Westerville to Sofia | 5,095.85 mi (8,200.97 km) |
| Westerville to Sopot | 5,152.93 mi (8,292.84 km) |
| Westerville to Sozopol | 5,275.73 mi (8,490.47 km) |
| Westerville to Sredets | 5,260.01 mi (8,465.17 km) |
| Westerville to Stamboliyski | 5,167.95 mi (8,317.00 km) |
| Westerville to Stara Zagora | 5,197.27 mi (8,364.20 km) |
| Westerville to Svilengrad | 5,248.95 mi (8,447.37 km) |
| Westerville to Svishtov | 5,131.98 mi (8,259.12 km) |
| Westerville to Targovishte | 5,195.14 mi (8,360.78 km) |
| Westerville to Teteven | 5,122.33 mi (8,243.60 km) |
| Westerville to Troyan | 5,141.10 mi (8,273.81 km) |
| Westerville to Tryavna | 5,171.75 mi (8,323.14 km) |
| Westerville to Tutrakan | 5,159.60 mi (8,303.58 km) |
| Westerville to Varna | 5,246.44 mi (8,443.32 km) |
