| San Pietro in Casale to Smolyan | 703.29 mi (1,131.84 km) |
| San Pietro in Casale to Sofia | 611.13 mi (983.52 km) |
| San Pietro in Casale to Sopot | 681.17 mi (1,096.24 km) |
| San Pietro in Casale to Sozopol | 829.76 mi (1,335.38 km) |
| San Pietro in Casale to Sredets | 806.66 mi (1,298.19 km) |
| San Pietro in Casale to Stamboliyski | 681.71 mi (1,097.11 km) |
| San Pietro in Casale to Stara Zagora | 729.36 mi (1,173.80 km) |
| San Pietro in Casale to Svilengrad | 770.87 mi (1,240.59 km) |
| San Pietro in Casale to Svishtov | 694.66 mi (1,117.94 km) |
| San Pietro in Casale to Targovishte | 760.44 mi (1,223.80 km) |
| San Pietro in Casale to Teteven | 652.55 mi (1,050.18 km) |
| San Pietro in Casale to Troyan | 675.13 mi (1,086.52 km) |
| San Pietro in Casale to Tryavna | 713.71 mi (1,148.60 km) |
| San Pietro in Casale to Tutrakan | 751.74 mi (1,209.81 km) |
| San Pietro in Casale to Varna | 826.40 mi (1,329.96 km) |
