| Zionsville to Smolyan | 5,336.28 mi (8,587.91 km) |
| Zionsville to Sofia | 5,232.43 mi (8,420.78 km) |
| Zionsville to Sopot | 5,288.12 mi (8,510.41 km) |
| Zionsville to Sozopol | 5,408.12 mi (8,703.52 km) |
| Zionsville to Sredets | 5,393.05 mi (8,679.28 km) |
| Zionsville to Stamboliyski | 5,304.19 mi (8,536.26 km) |
| Zionsville to Stara Zagora | 5,331.86 mi (8,580.80 km) |
| Zionsville to Svilengrad | 5,384.00 mi (8,664.71 km) |
| Zionsville to Svishtov | 5,264.98 mi (8,473.17 km) |
| Zionsville to Targovishte | 5,327.42 mi (8,573.66 km) |
| Zionsville to Teteven | 5,257.61 mi (8,461.30 km) |
| Zionsville to Troyan | 5,275.96 mi (8,490.84 km) |
| Zionsville to Tryavna | 5,305.81 mi (8,538.88 km) |
| Zionsville to Tutrakan | 5,290.55 mi (8,514.31 km) |
| Zionsville to Varna | 5,377.31 mi (8,653.94 km) |
