| Modesto to Smolyan | 6,551.46 mi (10,543.56 km) |
| Modesto to Sofia | 6,450.82 mi (10,381.59 km) |
| Modesto to Sopot | 6,486.69 mi (10,439.31 km) |
| Modesto to Sozopol | 6,565.81 mi (10,566.65 km) |
| Modesto to Sredets | 6,559.39 mi (10,556.31 km) |
| Modesto to Stamboliyski | 6,513.65 mi (10,482.71 km) |
| Modesto to Stara Zagora | 6,520.35 mi (10,493.50 km) |
| Modesto to Svilengrad | 6,574.08 mi (10,579.96 km) |
| Modesto to Svishtov | 6,440.21 mi (10,364.52 km) |
| Modesto to Targovishte | 6,489.82 mi (10,444.35 km) |
| Modesto to Teteven | 6,459.21 mi (10,395.10 km) |
| Modesto to Troyan | 6,471.51 mi (10,414.89 km) |
| Modesto to Tryavna | 6,490.08 mi (10,444.77 km) |
| Modesto to Tutrakan | 6,440.50 mi (10,364.98 km) |
| Modesto to Varna | 6,519.95 mi (10,492.84 km) |
