| Horsham to Smolyan | 1,352.36 mi (2,176.41 km) |
| Horsham to Sofia | 1,250.01 mi (2,011.70 km) |
| Horsham to Sopot | 1,310.85 mi (2,109.61 km) |
| Horsham to Sozopol | 1,443.74 mi (2,323.47 km) |
| Horsham to Sredets | 1,425.25 mi (2,293.72 km) |
| Horsham to Stamboliyski | 1,322.68 mi (2,128.65 km) |
| Horsham to Stara Zagora | 1,356.97 mi (2,183.83 km) |
| Horsham to Svilengrad | 1,406.72 mi (2,263.89 km) |
| Horsham to Svishtov | 1,299.01 mi (2,090.55 km) |
| Horsham to Targovishte | 1,364.80 mi (2,196.44 km) |
| Horsham to Teteven | 1,280.21 mi (2,060.30 km) |
| Horsham to Troyan | 1,300.28 mi (2,092.60 km) |
| Horsham to Tryavna | 1,333.70 mi (2,146.38 km) |
| Horsham to Tutrakan | 1,337.15 mi (2,151.94 km) |
| Horsham to Varna | 1,422.67 mi (2,289.56 km) |
