| Covina to Smolyan | 6,694.50 mi (10,773.75 km) |
| Covina to Sofia | 6,592.24 mi (10,609.19 km) |
| Covina to Sopot | 6,632.23 mi (10,673.54 km) |
| Covina to Sozopol | 6,719.70 mi (10,814.31 km) |
| Covina to Sredets | 6,711.64 mi (10,801.34 km) |
| Covina to Stamboliyski | 6,657.40 mi (10,714.05 km) |
| Covina to Stara Zagora | 6,668.12 mi (10,731.30 km) |
| Covina to Svilengrad | 6,722.09 mi (10,818.16 km) |
| Covina to Svishtov | 6,589.63 mi (10,604.98 km) |
| Covina to Targovishte | 6,642.08 mi (10,689.40 km) |
| Covina to Teteven | 6,603.91 mi (10,627.96 km) |
| Covina to Troyan | 6,617.47 mi (10,649.78 km) |
| Covina to Tryavna | 6,638.33 mi (10,683.35 km) |
| Covina to Tutrakan | 6,594.51 mi (10,612.83 km) |
| Covina to Varna | 6,676.08 mi (10,744.11 km) |
