| Ridge to Smolyan | 4,760.39 mi (7,661.10 km) |
| Ridge to Sofia | 4,658.23 mi (7,496.70 km) |
| Ridge to Sopot | 4,718.69 mi (7,593.99 km) |
| Ridge to Sozopol | 4,848.26 mi (7,802.53 km) |
| Ridge to Sredets | 4,830.90 mi (7,774.58 km) |
| Ridge to Stamboliyski | 4,730.91 mi (7,613.66 km) |
| Ridge to Stara Zagora | 4,764.41 mi (7,667.58 km) |
| Ridge to Svilengrad | 4,814.66 mi (7,748.45 km) |
| Ridge to Svishtov | 4,703.57 mi (7,569.66 km) |
| Ridge to Targovishte | 4,768.34 mi (7,673.90 km) |
| Ridge to Teteven | 4,688.03 mi (7,544.65 km) |
| Ridge to Troyan | 4,707.80 mi (7,576.47 km) |
| Ridge to Tryavna | 4,740.40 mi (7,628.94 km) |
| Ridge to Tutrakan | 4,736.49 mi (7,622.64 km) |
| Ridge to Varna | 4,823.08 mi (7,762.00 km) |
