| Someren to Smolyan | 1,123.21 mi (1,807.62 km) |
| Someren to Sofia | 1,019.28 mi (1,640.38 km) |
| Someren to Sopot | 1,075.68 mi (1,731.14 km) |
| Someren to Sozopol | 1,201.71 mi (1,933.96 km) |
| Someren to Sredets | 1,184.73 mi (1,906.65 km) |
| Someren to Stamboliyski | 1,091.05 mi (1,755.88 km) |
| Someren to Stara Zagora | 1,120.24 mi (1,802.85 km) |
| Someren to Svilengrad | 1,171.72 mi (1,885.70 km) |
| Someren to Svishtov | 1,057.12 mi (1,701.27 km) |
| Someren to Targovishte | 1,121.68 mi (1,805.17 km) |
| Someren to Teteven | 1,045.08 mi (1,681.90 km) |
| Someren to Troyan | 1,063.95 mi (1,712.27 km) |
| Someren to Tryavna | 1,095.19 mi (1,762.54 km) |
| Someren to Tutrakan | 1,090.38 mi (1,754.80 km) |
| Someren to Varna | 1,176.78 mi (1,893.84 km) |
