| South Portland to Laredo (Texas) | 1,964.29 mi (3,161.22 km) |
| South Portland to Largo (Florida) | 1,288.84 mi (2,074.19 km) |
| South Portland to Largo (Maryland) | 472.08 mi (759.74 km) |
| South Portland to Larkspur (California) | 2,715.77 mi (4,370.60 km) |
| South Portland to Las Cruces (New Mexico) | 2,115.08 mi (3,403.90 km) |
| South Portland to Las Vegas (Nevada) | 2,406.52 mi (3,872.92 km) |
| South Portland to Las Vegas (New Mexico) | 1,924.28 mi (3,096.84 km) |
| South Portland to Latham (New York) | 184.79 mi (297.39 km) |
| South Portland to Lathrop (California) | 2,659.58 mi (4,280.19 km) |
| South Portland to Lauderdale Lakes (Florida) | 1,328.53 mi (2,138.07 km) |
| South Portland to Lauderhill (Florida) | 1,329.55 mi (2,139.70 km) |
| South Portland to Laurel (Florida) | 1,325.61 mi (2,133.36 km) |
| South Portland to Laurel (Maryland) | 462.76 mi (744.74 km) |
| South Portland to Laurel (Mississippi) | 1,315.02 mi (2,116.32 km) |
| South Portland to Laurel (Virginia) | 560.51 mi (902.06 km) |
