| South Portland to Federal Way (Washington) | 2,487.43 mi (4,003.12 km) |
| South Portland to Felida (Washington) | 2,533.14 mi (4,076.69 km) |
| South Portland to Fenton (Michigan) | 677.69 mi (1,090.64 km) |
| South Portland to Fergus Falls (Minnesota) | 1,268.26 mi (2,041.07 km) |
| South Portland to Ferguson (Missouri) | 1,090.32 mi (1,754.71 km) |
| South Portland to Fernandina Beach (Florida) | 1,084.71 mi (1,745.68 km) |
| South Portland to Ferndale (Maryland) | 449.58 mi (723.52 km) |
| South Portland to Ferndale (Michigan) | 652.81 mi (1,050.59 km) |
| South Portland to Ferndale (Washington) | 2,475.07 mi (3,983.24 km) |
| South Portland to Fernley (Nevada) | 2,505.68 mi (4,032.50 km) |
| South Portland to Ferry Pass (Florida) | 1,294.57 mi (2,083.40 km) |
| South Portland to Festus (Missouri) | 1,111.54 mi (1,788.84 km) |
| South Portland to Fife (Washington) | 2,489.42 mi (4,006.33 km) |
| South Portland to Fillmore (California) | 2,647.68 mi (4,261.03 km) |
| South Portland to Findlay (Ohio) | 703.85 mi (1,132.73 km) |
