| South Portland to La Crescenta-Montrose (California) | 2,619.18 mi (4,215.16 km) |
| South Portland to La Crosse (Wisconsin) | 1,042.67 mi (1,678.02 km) |
| South Portland to La Grande (Oregon) | 2,324.39 mi (3,740.74 km) |
| South Portland to La Grange (Illinois) | 899.74 mi (1,448.00 km) |
| South Portland to La Grange Park (Illinois) | 899.26 mi (1,447.22 km) |
| South Portland to La Habra (California) | 2,615.22 mi (4,208.80 km) |
| South Portland to La Homa (Texas) | 1,974.56 mi (3,177.74 km) |
| South Portland to La Marque (Texas) | 1,678.58 mi (2,701.41 km) |
| South Portland to La Mesa (California) | 2,608.61 mi (4,198.16 km) |
| South Portland to La Mirada (California) | 2,618.98 mi (4,214.85 km) |
| South Portland to La Palma (California) | 2,622.32 mi (4,220.22 km) |
| South Portland to La Porte (Indiana) | 845.28 mi (1,360.34 km) |
| South Portland to La Porte (Texas) | 1,666.98 mi (2,682.75 km) |
| South Portland to La Presa (California) | 2,609.81 mi (4,200.09 km) |
| South Portland to La Puente (California) | 2,611.80 mi (4,203.28 km) |
