| Indiana to Smolyan | 5,028.11 mi (8,091.97 km) |
| Indiana to Sofia | 4,925.01 mi (7,926.04 km) |
| Indiana to Sopot | 4,983.32 mi (8,019.88 km) |
| Indiana to Sozopol | 5,108.62 mi (8,221.52 km) |
| Indiana to Sredets | 5,092.30 mi (8,195.26 km) |
| Indiana to Stamboliyski | 4,997.37 mi (8,042.48 km) |
| Indiana to Stara Zagora | 5,028.19 mi (8,092.09 km) |
| Indiana to Svilengrad | 5,079.40 mi (8,174.50 km) |
| Indiana to Svishtov | 4,964.42 mi (7,989.46 km) |
| Indiana to Targovishte | 5,028.20 mi (8,092.11 km) |
| Indiana to Teteven | 4,952.68 mi (7,970.57 km) |
| Indiana to Troyan | 4,971.82 mi (8,001.37 km) |
| Indiana to Tryavna | 5,003.18 mi (8,051.85 km) |
| Indiana to Tutrakan | 4,993.94 mi (8,036.97 km) |
| Indiana to Varna | 5,080.76 mi (8,176.69 km) |
