| South Portland to Lindon (Utah) | 2,117.63 mi (3,408.00 km) |
| South Portland to Lindsay (California) | 2,597.92 mi (4,180.95 km) |
| South Portland to Linganore (Maryland) | 465.02 mi (748.38 km) |
| South Portland to Lino Lakes (Minnesota) | 1,126.45 mi (1,812.84 km) |
| South Portland to Linthicum (Maryland) | 449.62 mi (723.60 km) |
| South Portland to Linton Hall (Virginia) | 506.57 mi (815.24 km) |
| South Portland to Lisle (Illinois) | 910.73 mi (1,465.68 km) |
| South Portland to Lithia Springs (Georgia) | 1,028.11 mi (1,654.59 km) |
| South Portland to Little Canada (Minnesota) | 1,127.12 mi (1,813.92 km) |
| South Portland to Little Chute (Wisconsin) | 896.13 mi (1,442.17 km) |
| South Portland to Little Elm (Texas) | 1,603.08 mi (2,579.91 km) |
| South Portland to Little Ferry (New Jersey) | 271.60 mi (437.10 km) |
| South Portland to Little Rock (Arkansas) | 1,326.76 mi (2,135.21 km) |
| South Portland to Littleton (Colorado) | 1,802.22 mi (2,900.39 km) |
| South Portland to Live Oak (California) | 2,717.33 mi (4,373.11 km) |
