| Irigny to Smolyan | 1,030.44 mi (1,658.33 km) |
| Irigny to Sofia | 937.40 mi (1,508.60 km) |
| Irigny to Sopot | 1,006.76 mi (1,620.23 km) |
| Irigny to Sozopol | 1,154.07 mi (1,857.30 km) |
| Irigny to Sredets | 1,131.49 mi (1,820.96 km) |
| Irigny to Stamboliyski | 1,008.43 mi (1,622.91 km) |
| Irigny to Stara Zagora | 1,054.96 mi (1,697.79 km) |
| Irigny to Svilengrad | 1,097.45 mi (1,766.18 km) |
| Irigny to Svishtov | 1,016.18 mi (1,635.39 km) |
| Irigny to Targovishte | 1,082.62 mi (1,742.32 km) |
| Irigny to Teteven | 977.70 mi (1,573.45 km) |
| Irigny to Troyan | 1,000.08 mi (1,609.47 km) |
| Irigny to Tryavna | 1,038.17 mi (1,670.77 km) |
| Irigny to Tutrakan | 1,069.88 mi (1,721.81 km) |
| Irigny to Varna | 1,147.65 mi (1,846.96 km) |
