| Boom to Arico el Nuevo | 1,917.86 mi (3,086.49 km) |
| Boom to Armilla | 1,039.48 mi (1,672.88 km) |
| Boom to Arnedo | 684.47 mi (1,101.55 km) |
| Boom to Arona | 1,928.73 mi (3,103.98 km) |
| Boom to Arrecife | 1,787.90 mi (2,877.35 km) |
| Boom to Arrigorriaga | 641.37 mi (1,032.18 km) |
| Boom to Arroyomolinos | 846.00 mi (1,361.50 km) |
| Boom to Arteijo | 806.90 mi (1,298.59 km) |
| Boom to Arucas | 1,894.20 mi (3,048.42 km) |
| Boom to Aspe | 914.92 mi (1,472.43 km) |
| Boom to Astorga | 772.22 mi (1,242.77 km) |
| Boom to Atarfe | 1,036.10 mi (1,667.45 km) |
| Boom to Avila | 840.74 mi (1,353.03 km) |
| Boom to Aviles | 707.29 mi (1,138.27 km) |
| Boom to Ayamonte | 1,119.62 mi (1,801.86 km) |
