| Potomac to Aberaman | 3,526.96 mi (5,676.09 km) |
| Potomac to Aberbargoed | 3,535.61 mi (5,690.02 km) |
| Potomac to Aberdare | 3,526.22 mi (5,674.91 km) |
| Potomac to Aberdeen | 3,482.76 mi (5,604.96 km) |
| Potomac to Abergavenny | 3,541.61 mi (5,699.67 km) |
| Potomac to Abergele | 3,491.40 mi (5,618.87 km) |
| Potomac to Abertawe | 3,507.31 mi (5,644.47 km) |
| Potomac to Abertillery | 3,538.82 mi (5,695.18 km) |
| Potomac to Aberystwyth | 3,486.97 mi (5,611.73 km) |
| Potomac to Abingdon | 3,615.66 mi (5,818.85 km) |
| Potomac to Abram | 3,526.66 mi (5,675.62 km) |
| Potomac to Accrington | 3,530.97 mi (5,682.55 km) |
| Potomac to Acomb | 3,575.69 mi (5,754.52 km) |
| Potomac to Acton | 3,660.26 mi (5,890.62 km) |
| Potomac to Addlestone | 3,654.46 mi (5,881.29 km) |
