| Waunakee to Smolyan | 5,295.20 mi (8,521.79 km) |
| Waunakee to Sofia | 5,190.92 mi (8,353.98 km) |
| Waunakee to Sopot | 5,243.24 mi (8,438.19 km) |
| Waunakee to Sozopol | 5,356.55 mi (8,620.54 km) |
| Waunakee to Sredets | 5,342.99 mi (8,598.71 km) |
| Waunakee to Stamboliyski | 5,261.63 mi (8,467.78 km) |
| Waunakee to Stara Zagora | 5,285.46 mi (8,506.12 km) |
| Waunakee to Svilengrad | 5,338.45 mi (8,591.40 km) |
| Waunakee to Svishtov | 5,215.29 mi (8,393.20 km) |
| Waunakee to Targovishte | 5,275.91 mi (8,490.75 km) |
| Waunakee to Teteven | 5,213.01 mi (8,389.53 km) |
| Waunakee to Troyan | 5,230.36 mi (8,417.45 km) |
| Waunakee to Tryavna | 5,258.31 mi (8,462.43 km) |
| Waunakee to Tutrakan | 5,236.25 mi (8,426.93 km) |
| Waunakee to Varna | 5,322.55 mi (8,565.81 km) |
