| Hercules to Argentona | 5,928.58 mi (9,541.13 km) |
| Hercules to Arico el Nuevo | 5,812.82 mi (9,354.83 km) |
| Hercules to Armilla | 5,937.74 mi (9,555.87 km) |
| Hercules to Arnedo | 5,739.86 mi (9,237.40 km) |
| Hercules to Arona | 5,808.37 mi (9,347.66 km) |
| Hercules to Arrecife | 5,912.98 mi (9,516.03 km) |
| Hercules to Arrigorriaga | 5,662.75 mi (9,113.32 km) |
| Hercules to Arroyomolinos | 5,772.38 mi (9,289.74 km) |
| Hercules to Arteijo | 5,455.84 mi (8,780.32 km) |
| Hercules to Arucas | 5,861.17 mi (9,432.65 km) |
| Hercules to Aspe | 5,983.74 mi (9,629.90 km) |
| Hercules to Astorga | 5,585.96 mi (8,989.73 km) |
| Hercules to Atarfe | 5,931.32 mi (9,545.53 km) |
| Hercules to Avila | 5,724.63 mi (9,212.90 km) |
| Hercules to Aviles | 5,538.68 mi (8,913.64 km) |
