| New Cassel to Smolyan | 4,794.88 mi (7,716.61 km) |
| New Cassel to Sofia | 4,692.65 mi (7,552.09 km) |
| New Cassel to Sopot | 4,752.95 mi (7,649.13 km) |
| New Cassel to Sozopol | 4,882.22 mi (7,857.17 km) |
| New Cassel to Sredets | 4,864.93 mi (7,829.35 km) |
| New Cassel to Stamboliyski | 4,765.31 mi (7,669.02 km) |
| New Cassel to Stara Zagora | 4,798.62 mi (7,722.63 km) |
| New Cassel to Svilengrad | 4,848.94 mi (7,803.61 km) |
| New Cassel to Svishtov | 4,737.55 mi (7,624.34 km) |
| New Cassel to Targovishte | 4,802.25 mi (7,728.47 km) |
| New Cassel to Teteven | 4,722.29 mi (7,599.79 km) |
| New Cassel to Troyan | 4,742.01 mi (7,631.53 km) |
| New Cassel to Tryavna | 4,774.53 mi (7,683.86 km) |
| New Cassel to Tutrakan | 4,770.21 mi (7,676.91 km) |
| New Cassel to Varna | 4,856.83 mi (7,816.31 km) |
