| Spelle to Smolyan | 1,097.20 mi (1,765.77 km) |
| Spelle to Sofia | 992.90 mi (1,597.91 km) |
| Spelle to Sopot | 1,044.77 mi (1,681.40 km) |
| Spelle to Sozopol | 1,163.20 mi (1,871.98 km) |
| Spelle to Sredets | 1,147.87 mi (1,847.31 km) |
| Spelle to Stamboliyski | 1,063.19 mi (1,711.04 km) |
| Spelle to Stara Zagora | 1,087.51 mi (1,750.17 km) |
| Spelle to Svilengrad | 1,140.20 mi (1,834.97 km) |
| Spelle to Svishtov | 1,019.80 mi (1,641.20 km) |
| Spelle to Targovishte | 1,082.57 mi (1,742.23 km) |
| Spelle to Teteven | 1,014.49 mi (1,632.66 km) |
| Spelle to Troyan | 1,032.07 mi (1,660.95 km) |
| Spelle to Tryavna | 1,060.96 mi (1,707.44 km) |
| Spelle to Tutrakan | 1,047.47 mi (1,685.74 km) |
| Spelle to Varna | 1,134.29 mi (1,825.47 km) |
