| Hirson to Smolyan | 1,143.26 mi (1,839.89 km) |
| Hirson to Sofia | 1,041.02 mi (1,675.37 km) |
| Hirson to Sopot | 1,102.27 mi (1,773.93 km) |
| Hirson to Sozopol | 1,236.37 mi (1,989.74 km) |
| Hirson to Sredets | 1,217.52 mi (1,959.41 km) |
| Hirson to Stamboliyski | 1,113.73 mi (1,792.37 km) |
| Hirson to Stara Zagora | 1,148.57 mi (1,848.45 km) |
| Hirson to Svilengrad | 1,198.05 mi (1,928.07 km) |
| Hirson to Svishtov | 1,091.77 mi (1,757.03 km) |
| Hirson to Targovishte | 1,157.83 mi (1,863.36 km) |
| Hirson to Teteven | 1,071.64 mi (1,724.64 km) |
| Hirson to Troyan | 1,091.87 mi (1,757.20 km) |
| Hirson to Tryavna | 1,125.64 mi (1,811.54 km) |
| Hirson to Tutrakan | 1,131.53 mi (1,821.03 km) |
| Hirson to Varna | 1,216.57 mi (1,957.88 km) |
