| South Portland to Lyndon (Kentucky) | 878.54 mi (1,413.87 km) |
| South Portland to Lynn (Massachusetts) | 86.68 mi (139.49 km) |
| South Portland to Lynn Haven (Florida) | 1,250.97 mi (2,013.24 km) |
| South Portland to Lynnwood (Washington) | 2,477.58 mi (3,987.28 km) |
| South Portland to Lynwood (California) | 2,627.87 mi (4,229.14 km) |
| South Portland to Lyons (Illinois) | 896.92 mi (1,443.45 km) |
| South Portland to Mableton (Georgia) | 1,023.19 mi (1,646.66 km) |
| South Portland to Macedonia (Ohio) | 592.73 mi (953.90 km) |
| South Portland to Machesney Park (Illinois) | 948.82 mi (1,526.98 km) |
| South Portland to Mack (Ohio) | 806.25 mi (1,297.54 km) |
| South Portland to Macomb (Illinois) | 1,065.83 mi (1,715.29 km) |
| South Portland to Macon (Georgia) | 1,040.98 mi (1,675.30 km) |
| South Portland to Madera (California) | 2,623.80 mi (4,222.59 km) |
| South Portland to Madison (Alabama) | 1,073.11 mi (1,727.00 km) |
| South Portland to Madison (Indiana) | 852.96 mi (1,372.71 km) |
