| Grays to Smolyan | 1,335.63 mi (2,149.48 km) |
| Grays to Sofia | 1,232.74 mi (1,983.91 km) |
| Grays to Sopot | 1,292.44 mi (2,079.98 km) |
| Grays to Sozopol | 1,423.39 mi (2,290.72 km) |
| Grays to Sredets | 1,405.36 mi (2,261.71 km) |
| Grays to Stamboliyski | 1,305.26 mi (2,100.61 km) |
| Grays to Stara Zagora | 1,338.16 mi (2,153.55 km) |
| Grays to Svilengrad | 1,388.44 mi (2,234.48 km) |
| Grays to Svishtov | 1,278.59 mi (2,057.70 km) |
| Grays to Targovishte | 1,344.05 mi (2,163.04 km) |
| Grays to Teteven | 1,261.78 mi (2,030.64 km) |
| Grays to Troyan | 1,281.53 mi (2,062.42 km) |
| Grays to Tryavna | 1,314.35 mi (2,115.23 km) |
| Grays to Tutrakan | 1,315.17 mi (2,116.56 km) |
| Grays to Varna | 1,401.04 mi (2,254.75 km) |
