| Alcala de Guadaira to Smolyan | 1,647.05 mi (2,650.67 km) |
| Alcala de Guadaira to Sofia | 1,579.46 mi (2,541.89 km) |
| Alcala de Guadaira to Sopot | 1,651.30 mi (2,657.50 km) |
| Alcala de Guadaira to Sozopol | 1,801.12 mi (2,898.62 km) |
| Alcala de Guadaira to Sredets | 1,775.60 mi (2,857.55 km) |
| Alcala de Guadaira to Stamboliyski | 1,639.00 mi (2,637.72 km) |
| Alcala de Guadaira to Stara Zagora | 1,696.58 mi (2,730.39 km) |
| Alcala de Guadaira to Svilengrad | 1,724.42 mi (2,775.19 km) |
| Alcala de Guadaira to Svishtov | 1,685.39 mi (2,712.38 km) |
| Alcala de Guadaira to Targovishte | 1,745.71 mi (2,809.45 km) |
| Alcala de Guadaira to Teteven | 1,627.78 mi (2,619.66 km) |
| Alcala de Guadaira to Troyan | 1,650.39 mi (2,656.04 km) |
| Alcala de Guadaira to Tryavna | 1,689.95 mi (2,719.71 km) |
| Alcala de Guadaira to Tutrakan | 1,750.53 mi (2,817.20 km) |
| Alcala de Guadaira to Varna | 1,812.72 mi (2,917.29 km) |
