| Hemel Hempstead to Smolyan | 1,374.51 mi (2,212.06 km) |
| Hemel Hempstead to Sofia | 1,271.55 mi (2,046.36 km) |
| Hemel Hempstead to Sopot | 1,331.03 mi (2,142.08 km) |
| Hemel Hempstead to Sozopol | 1,461.50 mi (2,352.06 km) |
| Hemel Hempstead to Sredets | 1,443.60 mi (2,323.24 km) |
| Hemel Hempstead to Stamboliyski | 1,344.03 mi (2,163.01 km) |
| Hemel Hempstead to Stara Zagora | 1,376.65 mi (2,215.51 km) |
| Hemel Hempstead to Svilengrad | 1,427.05 mi (2,296.61 km) |
| Hemel Hempstead to Svishtov | 1,316.71 mi (2,119.03 km) |
| Hemel Hempstead to Targovishte | 1,382.06 mi (2,224.21 km) |
| Hemel Hempstead to Teteven | 1,300.36 mi (2,092.73 km) |
| Hemel Hempstead to Troyan | 1,320.05 mi (2,124.41 km) |
| Hemel Hempstead to Tryavna | 1,352.72 mi (2,176.99 km) |
| Hemel Hempstead to Tutrakan | 1,352.80 mi (2,177.12 km) |
| Hemel Hempstead to Varna | 1,438.77 mi (2,315.48 km) |
