| Glendora to Smolyan | 6,690.22 mi (10,766.88 km) |
| Glendora to Sofia | 6,587.97 mi (10,602.31 km) |
| Glendora to Sopot | 6,627.96 mi (10,666.67 km) |
| Glendora to Sozopol | 6,715.43 mi (10,807.44 km) |
| Glendora to Sredets | 6,707.37 mi (10,794.47 km) |
| Glendora to Stamboliyski | 6,653.13 mi (10,707.17 km) |
| Glendora to Stara Zagora | 6,663.85 mi (10,724.43 km) |
| Glendora to Svilengrad | 6,717.82 mi (10,811.29 km) |
| Glendora to Svishtov | 6,585.36 mi (10,598.11 km) |
| Glendora to Targovishte | 6,637.81 mi (10,682.53 km) |
| Glendora to Teteven | 6,599.63 mi (10,621.09 km) |
| Glendora to Troyan | 6,613.20 mi (10,642.91 km) |
| Glendora to Tryavna | 6,634.05 mi (10,676.48 km) |
| Glendora to Tutrakan | 6,590.24 mi (10,605.97 km) |
| Glendora to Varna | 6,671.82 mi (10,737.25 km) |
