| Kilwinning to Smolyan | 1,637.79 mi (2,635.77 km) |
| Kilwinning to Sofia | 1,533.54 mi (2,468.00 km) |
| Kilwinning to Sopot | 1,586.95 mi (2,553.95 km) |
| Kilwinning to Sozopol | 1,705.96 mi (2,745.48 km) |
| Kilwinning to Sredets | 1,690.73 mi (2,720.97 km) |
| Kilwinning to Stamboliyski | 1,604.48 mi (2,582.16 km) |
| Kilwinning to Stara Zagora | 1,630.07 mi (2,623.35 km) |
| Kilwinning to Svilengrad | 1,682.57 mi (2,707.84 km) |
| Kilwinning to Svishtov | 1,562.66 mi (2,514.87 km) |
| Kilwinning to Targovishte | 1,625.31 mi (2,615.68 km) |
| Kilwinning to Teteven | 1,556.56 mi (2,505.04 km) |
| Kilwinning to Troyan | 1,574.45 mi (2,533.83 km) |
| Kilwinning to Tryavna | 1,603.71 mi (2,580.92 km) |
| Kilwinning to Tutrakan | 1,589.50 mi (2,558.06 km) |
| Kilwinning to Varna | 1,676.34 mi (2,697.81 km) |
