| Champaign to Smolyan | 5,403.62 mi (8,696.29 km) |
| Champaign to Sofia | 5,299.60 mi (8,528.88 km) |
| Champaign to Sopot | 5,354.33 mi (8,616.96 km) |
| Champaign to Sozopol | 5,472.39 mi (8,806.95 km) |
| Champaign to Sredets | 5,457.77 mi (8,783.42 km) |
| Champaign to Stamboliyski | 5,371.09 mi (8,643.93 km) |
| Champaign to Stara Zagora | 5,397.64 mi (8,686.66 km) |
| Champaign to Svilengrad | 5,450.06 mi (8,771.02 km) |
| Champaign to Svishtov | 5,329.74 mi (8,577.39 km) |
| Champaign to Targovishte | 5,391.66 mi (8,677.04 km) |
| Champaign to Teteven | 5,323.88 mi (8,567.96 km) |
| Champaign to Troyan | 5,341.95 mi (8,597.03 km) |
| Champaign to Tryavna | 5,371.25 mi (8,644.19 km) |
| Champaign to Tutrakan | 5,353.92 mi (8,616.31 km) |
| Champaign to Varna | 5,440.59 mi (8,755.78 km) |
