| Risca to Argentona | 741.39 mi (1,193.15 km) |
| Risca to Arico el Nuevo | 1,760.68 mi (2,833.54 km) |
| Risca to Armilla | 999.28 mi (1,608.19 km) |
| Risca to Arnedo | 650.54 mi (1,046.95 km) |
| Risca to Arona | 1,770.34 mi (2,849.08 km) |
| Risca to Arrecife | 1,655.02 mi (2,663.50 km) |
| Risca to Arrigorriaga | 580.48 mi (934.19 km) |
| Risca to Arroyomolinos | 784.56 mi (1,262.62 km) |
| Risca to Arteijo | 626.69 mi (1,008.57 km) |
| Risca to Arucas | 1,746.15 mi (2,810.16 km) |
| Risca to Aspe | 923.22 mi (1,485.78 km) |
| Risca to Astorga | 647.31 mi (1,041.74 km) |
| Risca to Atarfe | 994.34 mi (1,600.24 km) |
| Risca to Avila | 760.90 mi (1,224.56 km) |
| Risca to Aviles | 571.50 mi (919.74 km) |
