| Glastonbury to Smolyan | 1,452.89 mi (2,338.20 km) |
| Glastonbury to Sofia | 1,350.94 mi (2,174.13 km) |
| Glastonbury to Sopot | 1,412.45 mi (2,273.13 km) |
| Glastonbury to Sozopol | 1,546.29 mi (2,488.51 km) |
| Glastonbury to Sredets | 1,527.59 mi (2,458.42 km) |
| Glastonbury to Stamboliyski | 1,423.68 mi (2,291.19 km) |
| Glastonbury to Stara Zagora | 1,458.78 mi (2,347.68 km) |
| Glastonbury to Svilengrad | 1,508.21 mi (2,427.22 km) |
| Glastonbury to Svishtov | 1,401.62 mi (2,255.68 km) |
| Glastonbury to Targovishte | 1,467.55 mi (2,361.79 km) |
| Glastonbury to Teteven | 1,381.84 mi (2,223.85 km) |
| Glastonbury to Troyan | 1,402.08 mi (2,256.43 km) |
| Glastonbury to Tryavna | 1,435.80 mi (2,310.70 km) |
| Glastonbury to Tutrakan | 1,440.35 mi (2,318.02 km) |
| Glastonbury to Varna | 1,525.74 mi (2,455.43 km) |
