| Herdecke to Alfena | 1,031.70 mi (1,660.35 km) |
| Herdecke to Alijo | 993.92 mi (1,599.56 km) |
| Herdecke to Aljustrel | 1,201.34 mi (1,933.37 km) |
| Herdecke to Almada | 1,189.71 mi (1,914.65 km) |
| Herdecke to Almargem | 1,184.20 mi (1,905.78 km) |
| Herdecke to Almeirim | 1,143.51 mi (1,840.30 km) |
| Herdecke to Amadora | 1,189.22 mi (1,913.87 km) |
| Herdecke to Amarante | 1,014.45 mi (1,632.60 km) |
| Herdecke to Amares | 1,005.61 mi (1,618.38 km) |
| Herdecke to Amora | 1,191.40 mi (1,917.37 km) |
| Herdecke to Anadia | 1,070.72 mi (1,723.16 km) |
| Herdecke to Angra do Heroismo | 1,883.26 mi (3,030.82 km) |
| Herdecke to Ansiao | 1,098.43 mi (1,767.74 km) |
| Herdecke to Anta | 1,047.08 mi (1,685.10 km) |
| Herdecke to Arcos de Valdevez | 996.91 mi (1,604.38 km) |
