| Gaillard to Smolyan | 971.53 mi (1,563.53 km) |
| Gaillard to Sofia | 876.32 mi (1,410.30 km) |
| Gaillard to Sopot | 944.67 mi (1,520.30 km) |
| Gaillard to Sozopol | 1,090.52 mi (1,755.02 km) |
| Gaillard to Sredets | 1,068.43 mi (1,719.47 km) |
| Gaillard to Stamboliyski | 948.04 mi (1,525.72 km) |
| Gaillard to Stara Zagora | 992.79 mi (1,597.73 km) |
| Gaillard to Svilengrad | 1,036.65 mi (1,668.33 km) |
| Gaillard to Svishtov | 951.06 mi (1,530.58 km) |
| Gaillard to Targovishte | 1,017.73 mi (1,637.89 km) |
| Gaillard to Teteven | 915.20 mi (1,472.87 km) |
| Gaillard to Troyan | 937.35 mi (1,508.51 km) |
| Gaillard to Tryavna | 974.93 mi (1,568.99 km) |
| Gaillard to Tutrakan | 1,003.09 mi (1,614.32 km) |
| Gaillard to Varna | 1,082.12 mi (1,741.51 km) |
