| Potomac to Lancaster (Texas) | 1,180.43 mi (1,899.72 km) |
| Potomac to Land O' Lakes (Florida) | 805.13 mi (1,295.73 km) |
| Potomac to Landover (Maryland) | 17.62 mi (28.35 km) |
| Potomac to Langley Park (Maryland) | 11.59 mi (18.65 km) |
| Potomac to Lanham (Maryland) | 19.25 mi (30.99 km) |
| Potomac to Lansdale (Pennsylvania) | 132.50 mi (213.24 km) |
| Potomac to Lansdowne (Pennsylvania) | 120.69 mi (194.22 km) |
| Potomac to Lansdowne (Virginia) | 16.28 mi (26.20 km) |
| Potomac to Lansing (Illinois) | 572.91 mi (922.01 km) |
| Potomac to Lansing (Kansas) | 947.46 mi (1,524.79 km) |
| Potomac to Lansing (Michigan) | 461.78 mi (743.16 km) |
| Potomac to Lantana (Florida) | 874.68 mi (1,407.65 km) |
| Potomac to Lantana (Texas) | 1,182.89 mi (1,903.67 km) |
| Potomac to Laplace (Louisiana) | 974.34 mi (1,568.05 km) |
| Potomac to Laramie (Wyoming) | 1,501.95 mi (2,417.16 km) |
