| Whitburn to Smolyan | 1,608.01 mi (2,587.84 km) |
| Whitburn to Sofia | 1,503.71 mi (2,420.00 km) |
| Whitburn to Sopot | 1,556.17 mi (2,504.42 km) |
| Whitburn to Sozopol | 1,673.54 mi (2,693.31 km) |
| Whitburn to Sredets | 1,658.66 mi (2,669.36 km) |
| Whitburn to Stamboliyski | 1,574.32 mi (2,533.62 km) |
| Whitburn to Stara Zagora | 1,598.90 mi (2,573.17 km) |
| Whitburn to Svilengrad | 1,651.61 mi (2,658.01 km) |
| Whitburn to Svishtov | 1,530.62 mi (2,463.30 km) |
| Whitburn to Targovishte | 1,592.84 mi (2,563.43 km) |
| Whitburn to Teteven | 1,525.87 mi (2,455.65 km) |
| Whitburn to Troyan | 1,543.48 mi (2,483.99 km) |
| Whitburn to Tryavna | 1,572.24 mi (2,530.28 km) |
| Whitburn to Tutrakan | 1,556.33 mi (2,504.68 km) |
| Whitburn to Varna | 1,643.15 mi (2,644.40 km) |
