| Arouca to Smolyan | 1,701.30 mi (2,737.98 km) |
| Arouca to Sofia | 1,621.01 mi (2,608.76 km) |
| Arouca to Sopot | 1,693.03 mi (2,724.67 km) |
| Arouca to Sozopol | 1,843.98 mi (2,967.60 km) |
| Arouca to Sredets | 1,819.51 mi (2,928.22 km) |
| Arouca to Stamboliyski | 1,686.92 mi (2,714.84 km) |
| Arouca to Stara Zagora | 1,740.44 mi (2,800.97 km) |
| Arouca to Svilengrad | 1,775.48 mi (2,857.36 km) |
| Arouca to Svishtov | 1,715.67 mi (2,761.10 km) |
| Arouca to Targovishte | 1,779.92 mi (2,864.51 km) |
| Arouca to Teteven | 1,666.49 mi (2,681.96 km) |
| Arouca to Troyan | 1,689.38 mi (2,718.80 km) |
| Arouca to Tryavna | 1,728.89 mi (2,782.38 km) |
| Arouca to Tutrakan | 1,775.71 mi (2,857.73 km) |
| Arouca to Varna | 1,846.79 mi (2,972.13 km) |
