| Caldas de Reyes to Smolyan | 1,699.66 mi (2,735.33 km) |
| Caldas de Reyes to Sofia | 1,614.74 mi (2,598.67 km) |
| Caldas de Reyes to Sopot | 1,686.19 mi (2,713.67 km) |
| Caldas de Reyes to Sozopol | 1,836.42 mi (2,955.43 km) |
| Caldas de Reyes to Sredets | 1,812.57 mi (2,917.04 km) |
| Caldas de Reyes to Stamboliyski | 1,682.73 mi (2,708.10 km) |
| Caldas de Reyes to Stara Zagora | 1,734.10 mi (2,790.76 km) |
| Caldas de Reyes to Svilengrad | 1,771.88 mi (2,851.57 km) |
| Caldas de Reyes to Svishtov | 1,703.84 mi (2,742.06 km) |
| Caldas de Reyes to Targovishte | 1,769.21 mi (2,847.28 km) |
| Caldas de Reyes to Teteven | 1,658.62 mi (2,669.29 km) |
| Caldas de Reyes to Troyan | 1,681.43 mi (2,706.00 km) |
| Caldas de Reyes to Tryavna | 1,720.58 mi (2,769.00 km) |
| Caldas de Reyes to Tutrakan | 1,761.27 mi (2,834.49 km) |
| Caldas de Reyes to Varna | 1,835.52 mi (2,953.99 km) |
