| Civita Castellana to Smolyan | 633.01 mi (1,018.73 km) |
| Civita Castellana to Sofia | 556.60 mi (895.77 km) |
| Civita Castellana to Sopot | 628.80 mi (1,011.95 km) |
| Civita Castellana to Sozopol | 779.66 mi (1,254.74 km) |
| Civita Castellana to Sredets | 754.60 mi (1,214.41 km) |
| Civita Castellana to Stamboliyski | 619.96 mi (997.73 km) |
| Civita Castellana to Stara Zagora | 675.30 mi (1,086.79 km) |
| Civita Castellana to Svilengrad | 707.89 mi (1,139.23 km) |
| Civita Castellana to Svishtov | 659.98 mi (1,062.14 km) |
| Civita Castellana to Targovishte | 720.98 mi (1,160.31 km) |
| Civita Castellana to Teteven | 603.98 mi (972.02 km) |
| Civita Castellana to Troyan | 626.77 mi (1,008.68 km) |
| Civita Castellana to Tryavna | 666.44 mi (1,072.53 km) |
| Civita Castellana to Tutrakan | 725.10 mi (1,166.93 km) |
| Civita Castellana to Varna | 788.11 mi (1,268.34 km) |
