| Grottaferrata to Smolyan | 620.30 mi (998.28 km) |
| Grottaferrata to Sofia | 548.41 mi (882.59 km) |
| Grottaferrata to Sopot | 620.36 mi (998.38 km) |
| Grottaferrata to Sozopol | 770.62 mi (1,240.19 km) |
| Grottaferrata to Sredets | 745.27 mi (1,199.39 km) |
| Grottaferrata to Stamboliyski | 609.40 mi (980.74 km) |
| Grottaferrata to Stara Zagora | 666.07 mi (1,071.93 km) |
| Grottaferrata to Svilengrad | 696.33 mi (1,120.64 km) |
| Grottaferrata to Svishtov | 655.34 mi (1,054.66 km) |
| Grottaferrata to Targovishte | 714.76 mi (1,150.29 km) |
| Grottaferrata to Teteven | 596.67 mi (960.25 km) |
| Grottaferrata to Troyan | 619.28 mi (996.64 km) |
| Grottaferrata to Tryavna | 658.86 mi (1,060.33 km) |
| Grottaferrata to Tutrakan | 721.74 mi (1,161.52 km) |
| Grottaferrata to Varna | 781.70 mi (1,258.02 km) |
