| Spondon to Smolyan | 1,440.80 mi (2,318.74 km) |
| Spondon to Sofia | 1,337.18 mi (2,151.98 km) |
| Spondon to Sopot | 1,394.64 mi (2,244.45 km) |
| Spondon to Sozopol | 1,521.42 mi (2,448.49 km) |
| Spondon to Sredets | 1,504.40 mi (2,421.09 km) |
| Spondon to Stamboliyski | 1,409.26 mi (2,267.98 km) |
| Spondon to Stara Zagora | 1,439.49 mi (2,316.63 km) |
| Spondon to Svilengrad | 1,490.71 mi (2,399.07 km) |
| Spondon to Svishtov | 1,376.82 mi (2,215.78 km) |
| Spondon to Targovishte | 1,441.39 mi (2,319.70 km) |
| Spondon to Teteven | 1,364.01 mi (2,195.16 km) |
| Spondon to Troyan | 1,383.10 mi (2,225.89 km) |
| Spondon to Tryavna | 1,414.66 mi (2,276.67 km) |
| Spondon to Tutrakan | 1,409.82 mi (2,268.89 km) |
| Spondon to Varna | 1,496.30 mi (2,408.06 km) |
