| Plan-de-Cuques to Smolyan | 985.81 mi (1,586.50 km) |
| Plan-de-Cuques to Sofia | 901.88 mi (1,451.44 km) |
| Plan-de-Cuques to Sopot | 973.64 mi (1,566.92 km) |
| Plan-de-Cuques to Sozopol | 1,124.32 mi (1,809.43 km) |
| Plan-de-Cuques to Sredets | 1,100.14 mi (1,770.50 km) |
| Plan-de-Cuques to Stamboliyski | 969.22 mi (1,559.80 km) |
| Plan-de-Cuques to Stara Zagora | 1,021.35 mi (1,643.70 km) |
| Plan-de-Cuques to Svilengrad | 1,058.27 mi (1,703.13 km) |
| Plan-de-Cuques to Svishtov | 994.79 mi (1,600.96 km) |
| Plan-de-Cuques to Targovishte | 1,059.21 mi (1,704.64 km) |
| Plan-de-Cuques to Teteven | 946.60 mi (1,523.40 km) |
| Plan-de-Cuques to Troyan | 969.47 mi (1,560.20 km) |
| Plan-de-Cuques to Tryavna | 1,008.85 mi (1,623.59 km) |
| Plan-de-Cuques to Tutrakan | 1,054.91 mi (1,697.71 km) |
| Plan-de-Cuques to Varna | 1,126.01 mi (1,812.14 km) |
