| Fond du Lac to Smolyan | 5,230.81 mi (8,418.17 km) |
| Fond du Lac to Sofia | 5,126.54 mi (8,250.37 km) |
| Fond du Lac to Sopot | 5,178.96 mi (8,334.73 km) |
| Fond du Lac to Sozopol | 5,292.49 mi (8,517.45 km) |
| Fond du Lac to Sredets | 5,278.87 mi (8,495.53 km) |
| Fond du Lac to Stamboliyski | 5,197.28 mi (8,364.22 km) |
| Fond du Lac to Stara Zagora | 5,221.22 mi (8,402.74 km) |
| Fond du Lac to Svilengrad | 5,274.19 mi (8,487.99 km) |
| Fond du Lac to Svishtov | 5,151.15 mi (8,289.98 km) |
| Fond du Lac to Targovishte | 5,211.84 mi (8,387.64 km) |
| Fond du Lac to Teteven | 5,148.72 mi (8,286.06 km) |
| Fond du Lac to Troyan | 5,166.10 mi (8,314.03 km) |
| Fond du Lac to Tryavna | 5,194.11 mi (8,359.10 km) |
| Fond du Lac to Tutrakan | 5,172.28 mi (8,323.98 km) |
| Fond du Lac to Varna | 5,258.60 mi (8,462.90 km) |
