| California City to Smolyan | 6,628.66 mi (10,667.79 km) |
| California City to Sofia | 6,526.58 mi (10,503.51 km) |
| California City to Sopot | 6,566.06 mi (10,567.05 km) |
| California City to Sozopol | 6,652.54 mi (10,706.23 km) |
| California City to Sredets | 6,644.67 mi (10,693.56 km) |
| California City to Stamboliyski | 6,591.46 mi (10,607.93 km) |
| California City to Stara Zagora | 6,601.69 mi (10,624.39 km) |
| California City to Svilengrad | 6,655.64 mi (10,711.22 km) |
| California City to Svishtov | 6,522.97 mi (10,497.71 km) |
| California City to Targovishte | 6,575.10 mi (10,581.60 km) |
| California City to Teteven | 6,537.84 mi (10,521.63 km) |
| California City to Troyan | 6,551.24 mi (10,543.21 km) |
| California City to Tryavna | 6,571.83 mi (10,576.33 km) |
| California City to Tutrakan | 6,527.31 mi (10,504.68 km) |
| California City to Varna | 6,608.65 mi (10,635.59 km) |
