| Busto Arsizio to Smolyan | 838.72 mi (1,349.80 km) |
| Busto Arsizio to Sofia | 744.18 mi (1,197.65 km) |
| Busto Arsizio to Sopot | 813.03 mi (1,308.45 km) |
| Busto Arsizio to Sozopol | 959.78 mi (1,544.62 km) |
| Busto Arsizio to Sredets | 937.37 mi (1,508.55 km) |
| Busto Arsizio to Stamboliyski | 815.66 mi (1,312.67 km) |
| Busto Arsizio to Stara Zagora | 861.20 mi (1,385.96 km) |
| Busto Arsizio to Svilengrad | 904.44 mi (1,455.56 km) |
| Busto Arsizio to Svishtov | 821.55 mi (1,322.16 km) |
| Busto Arsizio to Targovishte | 888.02 mi (1,429.13 km) |
| Busto Arsizio to Teteven | 783.77 mi (1,261.36 km) |
| Busto Arsizio to Troyan | 806.06 mi (1,297.23 km) |
| Busto Arsizio to Tryavna | 843.96 mi (1,358.23 km) |
| Busto Arsizio to Tutrakan | 875.32 mi (1,408.68 km) |
| Busto Arsizio to Varna | 952.99 mi (1,533.69 km) |
