| Potomac to Abilene (Texas) | 1,338.87 mi (2,154.70 km) |
| Potomac to Accokeek (Maryland) | 25.64 mi (41.26 km) |
| Potomac to Acworth (Georgia) | 537.84 mi (865.57 km) |
| Potomac to Ada (Oklahoma) | 1,112.97 mi (1,791.16 km) |
| Potomac to Addison (Illinois) | 602.56 mi (969.72 km) |
| Potomac to Addison (Texas) | 1,172.10 mi (1,886.31 km) |
| Potomac to Adelanto (California) | 2,229.36 mi (3,587.82 km) |
| Potomac to Adelphi (Maryland) | 12.35 mi (19.87 km) |
| Potomac to Adrian (Michigan) | 411.45 mi (662.17 km) |
| Potomac to Affton (Missouri) | 707.42 mi (1,138.48 km) |
| Potomac to Agoura Hills (California) | 2,310.35 mi (3,718.15 km) |
| Potomac to Aguadilla (Puerto Rico) | 1,543.82 mi (2,484.54 km) |
| Potomac to Aiken (South Carolina) | 455.17 mi (732.52 km) |
| Potomac to Akron (Ohio) | 269.70 mi (434.03 km) |
| Potomac to Alabaster (Alabama) | 669.47 mi (1,077.41 km) |
