| Castagneto Carducci to Smolyan | 727.07 mi (1,170.11 km) |
| Castagneto Carducci to Sofia | 644.15 mi (1,036.66 km) |
| Castagneto Carducci to Sopot | 716.12 mi (1,152.49 km) |
| Castagneto Carducci to Sozopol | 867.05 mi (1,395.38 km) |
| Castagneto Carducci to Sredets | 842.62 mi (1,356.07 km) |
| Castagneto Carducci to Stamboliyski | 710.83 mi (1,143.97 km) |
| Castagneto Carducci to Stara Zagora | 763.62 mi (1,228.93 km) |
| Castagneto Carducci to Svilengrad | 799.78 mi (1,287.12 km) |
| Castagneto Carducci to Svishtov | 740.25 mi (1,191.32 km) |
| Castagneto Carducci to Targovishte | 803.71 mi (1,293.45 km) |
| Castagneto Carducci to Teteven | 689.58 mi (1,109.78 km) |
| Castagneto Carducci to Troyan | 712.47 mi (1,146.62 km) |
| Castagneto Carducci to Tryavna | 752.01 mi (1,210.24 km) |
| Castagneto Carducci to Tutrakan | 802.34 mi (1,291.24 km) |
| Castagneto Carducci to Varna | 870.75 mi (1,401.34 km) |
