| Eau Claire to Smolyan | 5,284.90 mi (8,505.23 km) |
| Eau Claire to Sofia | 5,180.61 mi (8,337.39 km) |
| Eau Claire to Sopot | 5,230.93 mi (8,418.36 km) |
| Eau Claire to Sozopol | 5,340.22 mi (8,594.25 km) |
| Eau Claire to Sredets | 5,327.53 mi (8,573.83 km) |
| Eau Claire to Stamboliyski | 5,250.59 mi (8,450.00 km) |
| Eau Claire to Stara Zagora | 5,272.19 mi (8,484.76 km) |
| Eau Claire to Svilengrad | 5,325.55 mi (8,570.64 km) |
| Eau Claire to Svishtov | 5,200.31 mi (8,369.09 km) |
| Eau Claire to Targovishte | 5,259.77 mi (8,464.78 km) |
| Eau Claire to Teteven | 5,200.92 mi (8,370.07 km) |
| Eau Claire to Troyan | 5,217.66 mi (8,397.02 km) |
| Eau Claire to Tryavna | 5,244.48 mi (8,440.17 km) |
| Eau Claire to Tutrakan | 5,218.62 mi (8,398.56 km) |
| Eau Claire to Varna | 5,304.48 mi (8,536.73 km) |
