| Potomac to Llantrisant | 3,532.45 mi (5,684.93 km) |
| Potomac to Llantwit Major | 3,531.01 mi (5,682.61 km) |
| Potomac to London | 3,666.23 mi (5,900.23 km) |
| Potomac to London Colney | 3,654.41 mi (5,881.21 km) |
| Potomac to Long Eaton | 3,590.78 mi (5,778.79 km) |
| Potomac to Longbenton | 3,539.05 mi (5,695.54 km) |
| Potomac to Longbridge | 3,572.45 mi (5,749.30 km) |
| Potomac to Longton | 3,554.62 mi (5,720.61 km) |
| Potomac to Loughborough | 3,596.19 mi (5,787.51 km) |
| Potomac to Loughton | 3,671.26 mi (5,908.33 km) |
| Potomac to Louth | 3,631.33 mi (5,844.06 km) |
| Potomac to Lowestoft | 3,720.01 mi (5,986.78 km) |
| Potomac to Lowton | 3,528.10 mi (5,677.93 km) |
| Potomac to Ludlow | 3,543.11 mi (5,702.09 km) |
| Potomac to Luton | 3,646.46 mi (5,868.40 km) |
