| Potomac to Altus (Oklahoma) | 1,255.85 mi (2,021.10 km) |
| Potomac to Alum Rock (California) | 2,401.74 mi (3,865.23 km) |
| Potomac to Alvin (Texas) | 1,226.12 mi (1,973.24 km) |
| Potomac to Amarillo (Texas) | 1,378.51 mi (2,218.49 km) |
| Potomac to Amelia (Ohio) | 377.14 mi (606.95 km) |
| Potomac to American Canyon (California) | 2,408.81 mi (3,876.61 km) |
| Potomac to American Fork (Utah) | 1,830.17 mi (2,945.37 km) |
| Potomac to Americus (Georgia) | 620.99 mi (999.39 km) |
| Potomac to Ames (Iowa) | 886.03 mi (1,425.93 km) |
| Potomac to Amherst (Ohio) | 312.71 mi (503.26 km) |
| Potomac to Ammon (Idaho) | 1,818.49 mi (2,926.57 km) |
| Potomac to Amsterdam (New York) | 313.32 mi (504.24 km) |
| Potomac to Anacortes (Washington) | 2,322.73 mi (3,738.07 km) |
| Potomac to Anaheim (California) | 2,269.66 mi (3,652.67 km) |
| Potomac to Anchorage (Alaska) | 3,323.74 mi (5,349.05 km) |
