| South Portland to East Providence (Rhode Island) | 137.20 mi (220.80 km) |
| South Portland to East Rancho Dominguez (California) | 2,628.55 mi (4,230.25 km) |
| South Portland to East Renton Highlands (Washington) | 2,473.39 mi (3,980.53 km) |
| South Portland to East Ridge (Tennessee) | 994.23 mi (1,600.06 km) |
| South Portland to East Riverdale (Maryland) | 471.20 mi (758.32 km) |
| South Portland to East San Gabriel (California) | 2,615.28 mi (4,208.89 km) |
| South Portland to East St. Louis (Illinois) | 1,086.11 mi (1,747.92 km) |
| South Portland to East Wenatchee (Washington) | 2,392.16 mi (3,849.81 km) |
| South Portland to Eastern Goleta Valley (California) | 2,689.61 mi (4,328.51 km) |
| South Portland to Eastlake (Ohio) | 581.98 mi (936.61 km) |
| South Portland to Eastmont (Washington) | 2,471.03 mi (3,976.74 km) |
| South Portland to Easton (Maryland) | 450.13 mi (724.41 km) |
| South Portland to Easton (Pennsylvania) | 324.25 mi (521.83 km) |
| South Portland to Eastpointe (Michigan) | 643.47 mi (1,035.56 km) |
| South Portland to Eastvale (California) | 2,595.54 mi (4,177.11 km) |
