| Potomac to Ittiri | 4,356.05 mi (7,010.38 km) |
| Potomac to Ivrea | 4,165.75 mi (6,704.12 km) |
| Potomac to L'Aquila | 4,510.69 mi (7,259.26 km) |
| Potomac to La Loggia | 4,172.76 mi (6,715.41 km) |
| Potomac to La Maddalena | 4,372.75 mi (7,037.27 km) |
| Potomac to La Spezia | 4,294.05 mi (6,910.61 km) |
| Potomac to Lacchiarella | 4,224.79 mi (6,799.14 km) |
| Potomac to Ladispoli | 4,466.52 mi (7,188.16 km) |
| Potomac to Lainate | 4,212.47 mi (6,779.31 km) |
| Potomac to Laives | 4,282.33 mi (6,891.75 km) |
| Potomac to Lana | 4,268.06 mi (6,868.77 km) |
| Potomac to Lanciano | 4,557.77 mi (7,335.02 km) |
| Potomac to Langhirano | 4,296.45 mi (6,914.46 km) |
| Potomac to Lanuvio | 4,503.79 mi (7,248.14 km) |
| Potomac to Lariano | 4,507.88 mi (7,254.74 km) |
