| Potomac to Ames | 3,486.73 mi (5,611.34 km) |
| Potomac to Amorebieta | 3,755.47 mi (6,043.85 km) |
| Potomac to Amposta | 3,982.22 mi (6,408.76 km) |
| Potomac to Amurrio | 3,747.53 mi (6,031.07 km) |
| Potomac to Andoain | 3,788.78 mi (6,097.45 km) |
| Potomac to Andraitx | 4,104.28 mi (6,605.21 km) |
| Potomac to Andujar | 3,839.73 mi (6,179.45 km) |
| Potomac to Antequera | 3,845.40 mi (6,188.57 km) |
| Potomac to Antigua | 3,631.84 mi (5,844.88 km) |
| Potomac to Aranda de Duero | 3,752.77 mi (6,039.50 km) |
| Potomac to Aranjuez | 3,803.03 mi (6,120.38 km) |
| Potomac to Archena | 3,971.75 mi (6,391.91 km) |
| Potomac to Arcos de la Frontera | 3,791.87 mi (6,102.43 km) |
| Potomac to Arenys de Mar | 4,047.64 mi (6,514.05 km) |
| Potomac to Arenys de Munt | 4,046.23 mi (6,511.78 km) |
