| Potomac to Laredo (Texas) | 1,504.93 mi (2,421.95 km) |
| Potomac to Largo (Florida) | 831.45 mi (1,338.10 km) |
| Potomac to Largo (Maryland) | 21.71 mi (34.94 km) |
| Potomac to Larkspur (California) | 2,427.66 mi (3,906.94 km) |
| Potomac to Las Cruces (New Mexico) | 1,715.77 mi (2,761.26 km) |
| Potomac to Las Vegas (Nevada) | 2,077.09 mi (3,342.76 km) |
| Potomac to Las Vegas (New Mexico) | 1,551.90 mi (2,497.53 km) |
| Potomac to Latham (New York) | 314.18 mi (505.63 km) |
| Potomac to Lathrop (California) | 2,366.34 mi (3,808.25 km) |
| Potomac to Lauderdale Lakes (Florida) | 904.51 mi (1,455.66 km) |
| Potomac to Lauderhill (Florida) | 905.28 mi (1,456.91 km) |
| Potomac to Laurel (Florida) | 873.96 mi (1,406.50 km) |
| Potomac to Laurel (Maryland) | 18.67 mi (30.05 km) |
| Potomac to Laurel (Mississippi) | 840.89 mi (1,353.29 km) |
| Potomac to Laurel (Virginia) | 96.60 mi (155.47 km) |
