| Suisun City to Smolyan | 6,536.06 mi (10,518.78 km) |
| Suisun City to Sofia | 6,435.90 mi (10,357.58 km) |
| Suisun City to Sopot | 6,470.70 mi (10,413.58 km) |
| Suisun City to Sozopol | 6,547.62 mi (10,537.38 km) |
| Suisun City to Sredets | 6,541.63 mi (10,527.74 km) |
| Suisun City to Stamboliyski | 6,498.10 mi (10,457.68 km) |
| Suisun City to Stara Zagora | 6,503.77 mi (10,466.81 km) |
| Suisun City to Svilengrad | 6,557.40 mi (10,553.12 km) |
| Suisun City to Svishtov | 6,423.27 mi (10,337.25 km) |
| Suisun City to Targovishte | 6,472.11 mi (10,415.85 km) |
| Suisun City to Teteven | 6,443.46 mi (10,369.75 km) |
| Suisun City to Troyan | 6,455.43 mi (10,389.01 km) |
| Suisun City to Tryavna | 6,473.40 mi (10,417.92 km) |
| Suisun City to Tutrakan | 6,422.37 mi (10,335.80 km) |
| Suisun City to Varna | 6,501.22 mi (10,462.70 km) |
