| Willenhall to Smolyan | 1,457.82 mi (2,346.13 km) |
| Willenhall to Sofia | 1,354.51 mi (2,179.87 km) |
| Willenhall to Sopot | 1,412.98 mi (2,273.97 km) |
| Willenhall to Sozopol | 1,541.49 mi (2,480.79 km) |
| Willenhall to Sredets | 1,524.07 mi (2,452.76 km) |
| Willenhall to Stamboliyski | 1,426.81 mi (2,296.23 km) |
| Willenhall to Stara Zagora | 1,458.21 mi (2,346.76 km) |
| Willenhall to Svilengrad | 1,509.05 mi (2,428.58 km) |
| Willenhall to Svishtov | 1,396.76 mi (2,247.87 km) |
| Willenhall to Targovishte | 1,461.70 mi (2,352.38 km) |
| Willenhall to Teteven | 1,382.32 mi (2,224.63 km) |
| Willenhall to Troyan | 1,401.70 mi (2,255.82 km) |
| Willenhall to Tryavna | 1,433.79 mi (2,307.46 km) |
| Willenhall to Tutrakan | 1,431.10 mi (2,303.13 km) |
| Willenhall to Varna | 1,517.39 mi (2,442.00 km) |
