| Caldas da Rainha to Smolyan | 1,772.77 mi (2,853.00 km) |
| Caldas da Rainha to Sofia | 1,696.20 mi (2,729.77 km) |
| Caldas da Rainha to Sopot | 1,768.40 mi (2,845.97 km) |
| Caldas da Rainha to Sozopol | 1,919.44 mi (3,089.04 km) |
| Caldas da Rainha to Sredets | 1,894.58 mi (3,049.03 km) |
| Caldas da Rainha to Stamboliyski | 1,760.35 mi (2,833.01 km) |
| Caldas da Rainha to Stara Zagora | 1,815.30 mi (2,921.45 km) |
| Caldas da Rainha to Svilengrad | 1,848.19 mi (2,974.38 km) |
| Caldas da Rainha to Svishtov | 1,794.56 mi (2,888.06 km) |
| Caldas da Rainha to Targovishte | 1,857.83 mi (2,989.89 km) |
| Caldas da Rainha to Teteven | 1,742.70 mi (2,804.61 km) |
| Caldas da Rainha to Troyan | 1,765.58 mi (2,841.43 km) |
| Caldas da Rainha to Tryavna | 1,805.22 mi (2,905.23 km) |
| Caldas da Rainha to Tutrakan | 1,856.26 mi (2,987.37 km) |
| Caldas da Rainha to Varna | 1,924.92 mi (3,097.86 km) |
