| San Gwann to Smolyan | 675.30 mi (1,086.79 km) |
| San Gwann to Sofia | 665.67 mi (1,071.28 km) |
| San Gwann to Sopot | 719.24 mi (1,157.51 km) |
| San Gwann to Sozopol | 837.45 mi (1,347.75 km) |
| San Gwann to Sredets | 812.83 mi (1,308.12 km) |
| San Gwann to Stamboliyski | 689.26 mi (1,109.26 km) |
| San Gwann to Stara Zagora | 748.10 mi (1,203.95 km) |
| San Gwann to Svilengrad | 748.43 mi (1,204.49 km) |
| San Gwann to Svishtov | 784.23 mi (1,262.09 km) |
| San Gwann to Targovishte | 818.78 mi (1,317.69 km) |
| San Gwann to Teteven | 711.42 mi (1,144.91 km) |
| San Gwann to Troyan | 727.71 mi (1,171.14 km) |
| San Gwann to Tryavna | 758.78 mi (1,221.14 km) |
| San Gwann to Tutrakan | 852.38 mi (1,371.77 km) |
| San Gwann to Varna | 874.18 mi (1,406.86 km) |
