| Mattoon to Smolyan | 5,438.24 mi (8,751.99 km) |
| Mattoon to Sofia | 5,334.27 mi (8,584.67 km) |
| Mattoon to Sopot | 5,389.33 mi (8,673.29 km) |
| Mattoon to Sozopol | 5,508.03 mi (8,864.32 km) |
| Mattoon to Sredets | 5,493.26 mi (8,840.55 km) |
| Mattoon to Stamboliyski | 5,405.85 mi (8,699.88 km) |
| Mattoon to Stara Zagora | 5,432.78 mi (8,743.22 km) |
| Mattoon to Svilengrad | 5,485.11 mi (8,827.43 km) |
| Mattoon to Svishtov | 5,365.22 mi (8,634.49 km) |
| Mattoon to Targovishte | 5,427.31 mi (8,734.42 km) |
| Mattoon to Teteven | 5,358.86 mi (8,624.25 km) |
| Mattoon to Troyan | 5,377.02 mi (8,653.48 km) |
| Mattoon to Tryavna | 5,406.51 mi (8,700.93 km) |
| Mattoon to Tutrakan | 5,389.84 mi (8,674.12 km) |
| Mattoon to Varna | 5,476.54 mi (8,813.64 km) |
