| Alcala la Real to Popovo | 1,628.22 mi (2,620.37 km) |
| Alcala la Real to Provadia | 1,687.78 mi (2,716.22 km) |
| Alcala la Real to Radnevo | 1,609.15 mi (2,589.67 km) |
| Alcala la Real to Radomir | 1,458.31 mi (2,346.93 km) |
| Alcala la Real to Rakitovo | 1,513.57 mi (2,435.86 km) |
| Alcala la Real to Rakovski | 1,559.69 mi (2,510.08 km) |
| Alcala la Real to Razgrad | 1,643.34 mi (2,644.71 km) |
| Alcala la Real to Razlog | 1,481.59 mi (2,384.39 km) |
| Alcala la Real to Ruse | 1,617.04 mi (2,602.38 km) |
| Alcala la Real to Samokov | 1,487.96 mi (2,394.64 km) |
| Alcala la Real to Sandanski | 1,471.15 mi (2,367.58 km) |
| Alcala la Real to Sevlievo | 1,570.30 mi (2,527.15 km) |
| Alcala la Real to Shumen | 1,663.03 mi (2,676.39 km) |
| Alcala la Real to Silistra | 1,683.61 mi (2,709.51 km) |
| Alcala la Real to Sliven | 1,630.56 mi (2,624.14 km) |
