| Boulder to Ames | 4,704.67 mi (7,571.44 km) |
| Boulder to Amorebieta | 4,931.23 mi (7,936.04 km) |
| Boulder to Amposta | 5,172.67 mi (8,324.60 km) |
| Boulder to Amurrio | 4,927.65 mi (7,930.28 km) |
| Boulder to Andoain | 4,959.76 mi (7,981.96 km) |
| Boulder to Andraitx | 5,297.50 mi (8,525.51 km) |
| Boulder to Andujar | 5,098.52 mi (8,205.28 km) |
| Boulder to Antequera | 5,120.64 mi (8,240.87 km) |
| Boulder to Antigua | 5,047.59 mi (8,123.31 km) |
| Boulder to Aranda de Duero | 4,958.18 mi (7,979.41 km) |
| Boulder to Aranjuez | 5,031.76 mi (8,097.84 km) |
| Boulder to Archena | 5,211.21 mi (8,386.64 km) |
| Boulder to Arcos de la Frontera | 5,078.31 mi (8,172.74 km) |
| Boulder to Arenys de Mar | 5,211.13 mi (8,386.50 km) |
| Boulder to Arenys de Munt | 5,209.34 mi (8,383.62 km) |
