| South Portland to Finneytown (Ohio) | 796.29 mi (1,281.50 km) |
| South Portland to Firestone (Colorado) | 1,785.56 mi (2,873.58 km) |
| South Portland to Fish Hawk (Florida) | 1,276.05 mi (2,053.60 km) |
| South Portland to Fishers (Indiana) | 844.92 mi (1,359.76 km) |
| South Portland to Fitchburg (Massachusetts) | 105.29 mi (169.45 km) |
| South Portland to Fitchburg (Wisconsin) | 961.01 mi (1,546.59 km) |
| South Portland to Five Corners (Washington) | 2,527.30 mi (4,067.29 km) |
| South Portland to Five Forks (South Carolina) | 881.49 mi (1,418.63 km) |
| South Portland to Flagstaff (Arizona) | 2,257.09 mi (3,632.44 km) |
| South Portland to Flat Rock (Michigan) | 665.20 mi (1,070.53 km) |
| South Portland to Fleming Island (Florida) | 1,125.80 mi (1,811.81 km) |
| South Portland to Flint (Michigan) | 674.21 mi (1,085.03 km) |
| South Portland to Floral Park (New York) | 266.27 mi (428.52 km) |
| South Portland to Florence (Alabama) | 1,107.62 mi (1,782.53 km) |
| South Portland to Florence (Arizona) | 2,318.73 mi (3,731.64 km) |
