| Rio Rico to Smolyan | 6,653.28 mi (10,707.42 km) |
| Rio Rico to Sofia | 6,549.38 mi (10,540.21 km) |
| Rio Rico to Sopot | 6,595.77 mi (10,614.87 km) |
| Rio Rico to Sozopol | 6,696.37 mi (10,776.76 km) |
| Rio Rico to Sredets | 6,685.62 mi (10,759.46 km) |
| Rio Rico to Stamboliyski | 6,617.73 mi (10,650.21 km) |
| Rio Rico to Stara Zagora | 6,635.01 mi (10,678.01 km) |
| Rio Rico to Svilengrad | 6,688.85 mi (10,764.66 km) |
| Rio Rico to Svishtov | 6,560.04 mi (10,557.37 km) |
| Rio Rico to Targovishte | 6,616.77 mi (10,648.66 km) |
| Rio Rico to Teteven | 6,566.32 mi (10,567.48 km) |
| Rio Rico to Troyan | 6,581.84 mi (10,592.45 km) |
| Rio Rico to Tryavna | 6,606.31 mi (10,631.83 km) |
| Rio Rico to Tutrakan | 6,572.62 mi (10,577.60 km) |
| Rio Rico to Varna | 6,656.99 mi (10,713.39 km) |
