| Middlesbrough to Argentona | 914.89 mi (1,472.37 km) |
| Middlesbrough to Arico el Nuevo | 1,977.58 mi (3,182.60 km) |
| Middlesbrough to Armilla | 1,209.33 mi (1,946.23 km) |
| Middlesbrough to Arnedo | 854.90 mi (1,375.82 km) |
| Middlesbrough to Arona | 1,987.09 mi (3,197.91 km) |
| Middlesbrough to Arrecife | 1,873.79 mi (3,015.57 km) |
| Middlesbrough to Arrigorriaga | 789.03 mi (1,269.82 km) |
| Middlesbrough to Arroyomolinos | 996.35 mi (1,603.48 km) |
| Middlesbrough to Arteijo | 844.87 mi (1,359.68 km) |
| Middlesbrough to Arucas | 1,963.93 mi (3,160.64 km) |
| Middlesbrough to Aspe | 1,121.67 mi (1,805.16 km) |
| Middlesbrough to Astorga | 865.40 mi (1,392.73 km) |
| Middlesbrough to Atarfe | 1,204.64 mi (1,938.68 km) |
| Middlesbrough to Avila | 975.25 mi (1,569.51 km) |
| Middlesbrough to Aviles | 789.84 mi (1,271.12 km) |
