| South Portland to Leland (North Carolina) | 772.03 mi (1,242.46 km) |
| South Portland to Lemay (Missouri) | 1,096.08 mi (1,763.97 km) |
| South Portland to Lemon Grove (California) | 2,610.62 mi (4,201.39 km) |
| South Portland to Lemon Hill (California) | 2,646.07 mi (4,258.44 km) |
| South Portland to Lemont (Illinois) | 907.57 mi (1,460.59 km) |
| South Portland to Lemoore (California) | 2,630.46 mi (4,233.32 km) |
| South Portland to Lenexa (Kansas) | 1,307.45 mi (2,104.14 km) |
| South Portland to Lennox (California) | 2,635.24 mi (4,241.01 km) |
| South Portland to Lenoir (North Carolina) | 799.07 mi (1,285.99 km) |
| South Portland to Leominster (Massachusetts) | 107.14 mi (172.42 km) |
| South Portland to Leon Valley (Texas) | 1,836.66 mi (2,955.81 km) |
| South Portland to Levelland (Texas) | 1,851.45 mi (2,979.62 km) |
| South Portland to Levittown (New York) | 259.90 mi (418.27 km) |
| South Portland to Levittown (Pennsylvania) | 335.80 mi (540.41 km) |
| South Portland to Lewisburg (Tennessee) | 1,042.23 mi (1,677.30 km) |
