| Riverview to Smolyan | 5,756.78 mi (9,264.65 km) |
| Riverview to Sofia | 5,656.81 mi (9,103.76 km) |
| Riverview to Sopot | 5,720.37 mi (9,206.04 km) |
| Riverview to Sozopol | 5,855.71 mi (9,423.86 km) |
| Riverview to Sredets | 5,836.90 mi (9,393.59 km) |
| Riverview to Stamboliyski | 5,729.59 mi (9,220.89 km) |
| Riverview to Stara Zagora | 5,767.19 mi (9,281.39 km) |
| Riverview to Svilengrad | 5,815.65 mi (9,359.38 km) |
| Riverview to Svishtov | 5,711.03 mi (9,191.02 km) |
| Riverview to Targovishte | 5,776.89 mi (9,297.00 km) |
| Riverview to Teteven | 5,689.85 mi (9,156.93 km) |
| Riverview to Troyan | 5,710.50 mi (9,190.16 km) |
| Riverview to Tryavna | 5,744.82 mi (9,245.40 km) |
| Riverview to Tutrakan | 5,748.50 mi (9,251.32 km) |
| Riverview to Varna | 5,834.39 mi (9,389.54 km) |
