| Rio Maior to Smolyan | 1,763.77 mi (2,838.52 km) |
| Rio Maior to Sofia | 1,687.54 mi (2,715.84 km) |
| Rio Maior to Sopot | 1,759.75 mi (2,832.04 km) |
| Rio Maior to Sozopol | 1,910.77 mi (3,075.09 km) |
| Rio Maior to Sredets | 1,885.88 mi (3,035.03 km) |
| Rio Maior to Stamboliyski | 1,751.53 mi (2,818.81 km) |
| Rio Maior to Stara Zagora | 1,806.60 mi (2,907.44 km) |
| Rio Maior to Svilengrad | 1,839.29 mi (2,960.05 km) |
| Rio Maior to Svishtov | 1,786.24 mi (2,874.68 km) |
| Rio Maior to Targovishte | 1,849.41 mi (2,976.33 km) |
| Rio Maior to Teteven | 1,734.13 mi (2,790.82 km) |
| Rio Maior to Troyan | 1,757.01 mi (2,827.63 km) |
| Rio Maior to Tryavna | 1,796.66 mi (2,891.44 km) |
| Rio Maior to Tutrakan | 1,848.11 mi (2,974.24 km) |
| Rio Maior to Varna | 1,916.51 mi (3,084.33 km) |
