| Sunderland to Smolyan | 1,497.55 mi (2,410.07 km) |
| Sunderland to Sofia | 1,393.28 mi (2,242.26 km) |
| Sunderland to Sopot | 1,446.45 mi (2,327.83 km) |
| Sunderland to Sozopol | 1,565.43 mi (2,519.32 km) |
| Sunderland to Sredets | 1,550.17 mi (2,494.75 km) |
| Sunderland to Stamboliyski | 1,464.11 mi (2,356.26 km) |
| Sunderland to Stara Zagora | 1,489.52 mi (2,397.14 km) |
| Sunderland to Svilengrad | 1,542.04 mi (2,481.67 km) |
| Sunderland to Svishtov | 1,422.10 mi (2,288.64 km) |
| Sunderland to Targovishte | 1,484.78 mi (2,389.53 km) |
| Sunderland to Teteven | 1,416.07 mi (2,278.95 km) |
| Sunderland to Troyan | 1,433.91 mi (2,307.66 km) |
| Sunderland to Tryavna | 1,463.13 mi (2,354.68 km) |
| Sunderland to Tutrakan | 1,449.15 mi (2,332.19 km) |
| Sunderland to Varna | 1,535.99 mi (2,471.94 km) |
