| Calne to Smolyan | 1,429.50 mi (2,300.56 km) |
| Calne to Sofia | 1,327.12 mi (2,135.80 km) |
| Calne to Sopot | 1,387.85 mi (2,233.53 km) |
| Calne to Sozopol | 1,520.37 mi (2,446.79 km) |
| Calne to Sredets | 1,501.99 mi (2,417.22 km) |
| Calne to Stamboliyski | 1,399.78 mi (2,252.73 km) |
| Calne to Stara Zagora | 1,433.91 mi (2,307.65 km) |
| Calne to Svilengrad | 1,483.73 mi (2,387.84 km) |
| Calne to Svishtov | 1,375.61 mi (2,213.83 km) |
| Calne to Targovishte | 1,441.32 mi (2,319.58 km) |
| Calne to Teteven | 1,357.20 mi (2,184.21 km) |
| Calne to Troyan | 1,377.23 mi (2,216.44 km) |
| Calne to Tryavna | 1,410.54 mi (2,270.05 km) |
| Calne to Tutrakan | 1,413.27 mi (2,274.45 km) |
| Calne to Varna | 1,498.92 mi (2,412.28 km) |
