| Cumbernauld to Smolyan | 1,621.20 mi (2,609.07 km) |
| Cumbernauld to Sofia | 1,516.91 mi (2,441.22 km) |
| Cumbernauld to Sopot | 1,569.36 mi (2,525.64 km) |
| Cumbernauld to Sozopol | 1,686.68 mi (2,714.44 km) |
| Cumbernauld to Sredets | 1,671.81 mi (2,690.52 km) |
| Cumbernauld to Stamboliyski | 1,587.51 mi (2,554.85 km) |
| Cumbernauld to Stara Zagora | 1,612.07 mi (2,594.38 km) |
| Cumbernauld to Svilengrad | 1,664.79 mi (2,679.22 km) |
| Cumbernauld to Svishtov | 1,543.77 mi (2,484.46 km) |
| Cumbernauld to Targovishte | 1,605.97 mi (2,584.57 km) |
| Cumbernauld to Teteven | 1,539.05 mi (2,476.86 km) |
| Cumbernauld to Troyan | 1,556.66 mi (2,505.20 km) |
| Cumbernauld to Tryavna | 1,585.41 mi (2,551.47 km) |
| Cumbernauld to Tutrakan | 1,569.43 mi (2,525.75 km) |
| Cumbernauld to Varna | 1,656.24 mi (2,665.46 km) |
