| Houston to Ames | 4,700.33 mi (7,564.45 km) |
| Houston to Amorebieta | 4,966.92 mi (7,993.49 km) |
| Houston to Amposta | 5,195.22 mi (8,360.90 km) |
| Houston to Amurrio | 4,959.33 mi (7,981.27 km) |
| Houston to Andoain | 4,999.89 mi (8,046.55 km) |
| Houston to Andraitx | 5,317.61 mi (8,557.87 km) |
| Houston to Andujar | 5,053.02 mi (8,132.06 km) |
| Houston to Antequera | 5,057.50 mi (8,139.27 km) |
| Houston to Antigua | 4,799.29 mi (7,723.71 km) |
| Houston to Aranda de Duero | 4,966.19 mi (7,992.31 km) |
| Houston to Aranjuez | 5,017.06 mi (8,074.18 km) |
| Houston to Archena | 5,185.65 mi (8,345.49 km) |
| Houston to Arcos de la Frontera | 5,002.98 mi (8,051.52 km) |
| Houston to Arenys de Mar | 5,258.79 mi (8,463.21 km) |
| Houston to Arenys de Munt | 5,257.34 mi (8,460.88 km) |
