| Clervaux to Smolyan | 1,067.89 mi (1,718.61 km) |
| Clervaux to Sofia | 964.90 mi (1,552.85 km) |
| Clervaux to Sopot | 1,024.56 mi (1,648.88 km) |
| Clervaux to Sozopol | 1,156.29 mi (1,860.87 km) |
| Clervaux to Sredets | 1,137.99 mi (1,831.41 km) |
| Clervaux to Stamboliyski | 1,037.38 mi (1,669.50 km) |
| Clervaux to Stara Zagora | 1,070.36 mi (1,722.57 km) |
| Clervaux to Svilengrad | 1,120.55 mi (1,803.36 km) |
| Clervaux to Svishtov | 1,011.53 mi (1,627.90 km) |
| Clervaux to Targovishte | 1,077.25 mi (1,733.66 km) |
| Clervaux to Teteven | 993.90 mi (1,599.53 km) |
| Clervaux to Troyan | 1,013.71 mi (1,631.41 km) |
| Clervaux to Tryavna | 1,046.72 mi (1,684.53 km) |
| Clervaux to Tutrakan | 1,049.57 mi (1,689.11 km) |
| Clervaux to Varna | 1,135.04 mi (1,826.67 km) |
