| Houghton Regis to Argentona | 728.14 mi (1,171.83 km) |
| Houghton Regis to Arico el Nuevo | 1,834.18 mi (2,951.83 km) |
| Houghton Regis to Armilla | 1,030.47 mi (1,658.37 km) |
| Houghton Regis to Arnedo | 673.37 mi (1,083.69 km) |
| Houghton Regis to Arona | 1,844.23 mi (2,968.01 km) |
| Houghton Regis to Arrecife | 1,720.71 mi (2,769.22 km) |
| Houghton Regis to Arrigorriaga | 610.76 mi (982.92 km) |
| Houghton Regis to Arroyomolinos | 819.93 mi (1,319.54 km) |
| Houghton Regis to Arteijo | 700.11 mi (1,126.72 km) |
| Houghton Regis to Arucas | 1,816.82 mi (2,923.89 km) |
| Houghton Regis to Aspe | 936.86 mi (1,507.73 km) |
| Houghton Regis to Astorga | 702.00 mi (1,129.76 km) |
| Houghton Regis to Atarfe | 1,026.00 mi (1,651.19 km) |
| Houghton Regis to Avila | 802.19 mi (1,290.99 km) |
| Houghton Regis to Aviles | 628.28 mi (1,011.11 km) |
