| Aberbargoed to Smolyan | 1,484.81 mi (2,389.57 km) |
| Aberbargoed to Sofia | 1,382.40 mi (2,224.76 km) |
| Aberbargoed to Sopot | 1,443.04 mi (2,322.36 km) |
| Aberbargoed to Sozopol | 1,575.31 mi (2,535.21 km) |
| Aberbargoed to Sredets | 1,557.00 mi (2,505.75 km) |
| Aberbargoed to Stamboliyski | 1,455.06 mi (2,341.69 km) |
| Aberbargoed to Stara Zagora | 1,489.07 mi (2,396.42 km) |
| Aberbargoed to Svilengrad | 1,538.95 mi (2,476.69 km) |
| Aberbargoed to Svishtov | 1,430.54 mi (2,302.23 km) |
| Aberbargoed to Targovishte | 1,496.19 mi (2,407.88 km) |
| Aberbargoed to Teteven | 1,412.40 mi (2,273.03 km) |
| Aberbargoed to Troyan | 1,432.39 mi (2,305.21 km) |
| Aberbargoed to Tryavna | 1,465.63 mi (2,358.71 km) |
| Aberbargoed to Tutrakan | 1,467.87 mi (2,362.31 km) |
| Aberbargoed to Varna | 1,553.60 mi (2,500.28 km) |
