| McCalla to Smolyan | 5,690.49 mi (9,157.96 km) |
| McCalla to Sofia | 5,587.70 mi (8,992.53 km) |
| McCalla to Sopot | 5,646.73 mi (9,087.54 km) |
| McCalla to Sozopol | 5,773.22 mi (9,291.09 km) |
| McCalla to Sredets | 5,756.64 mi (9,264.42 km) |
| McCalla to Stamboliyski | 5,660.19 mi (9,109.19 km) |
| McCalla to Stara Zagora | 5,691.87 mi (9,160.18 km) |
| McCalla to Svilengrad | 5,742.81 mi (9,242.15 km) |
| McCalla to Svishtov | 5,628.86 mi (9,058.78 km) |
| McCalla to Targovishte | 5,692.89 mi (9,161.83 km) |
| McCalla to Teteven | 5,616.08 mi (9,038.20 km) |
| McCalla to Troyan | 5,635.41 mi (9,069.32 km) |
| McCalla to Tryavna | 5,667.14 mi (9,120.38 km) |
| McCalla to Tutrakan | 5,659.11 mi (9,107.46 km) |
| McCalla to Varna | 5,745.91 mi (9,247.15 km) |
