| Boom to Amorebieta | 636.95 mi (1,025.07 km) |
| Boom to Amposta | 739.18 mi (1,189.60 km) |
| Boom to Amurrio | 653.55 mi (1,051.79 km) |
| Boom to Andoain | 620.25 mi (998.20 km) |
| Boom to Andraitx | 800.70 mi (1,288.60 km) |
| Boom to Andujar | 990.41 mi (1,593.91 km) |
| Boom to Antequera | 1,066.26 mi (1,715.99 km) |
| Boom to Antigua | 1,834.14 mi (2,951.76 km) |
| Boom to Aranda de Duero | 753.32 mi (1,212.34 km) |
| Boom to Aranjuez | 854.12 mi (1,374.58 km) |
| Boom to Archena | 937.67 mi (1,509.03 km) |
| Boom to Arcos de la Frontera | 1,109.69 mi (1,785.88 km) |
| Boom to Arenys de Mar | 662.12 mi (1,065.58 km) |
| Boom to Arenys de Munt | 660.06 mi (1,062.27 km) |
| Boom to Argentona | 664.86 mi (1,069.99 km) |
