| South Portland to Florence (Kentucky) | 809.81 mi (1,303.26 km) |
| South Portland to Florence (South Carolina) | 827.97 mi (1,332.49 km) |
| South Portland to Florence-Graham (California) | 2,628.53 mi (4,230.21 km) |
| South Portland to Florham Park (New Jersey) | 288.09 mi (463.63 km) |
| South Portland to Florida (Puerto Rico) | 1,759.20 mi (2,831.15 km) |
| South Portland to Florida City (Florida) | 1,381.28 mi (2,222.95 km) |
| South Portland to Florida Ridge (Florida) | 1,243.31 mi (2,000.91 km) |
| South Portland to Florin (California) | 2,644.44 mi (4,255.82 km) |
| South Portland to Florissant (Missouri) | 1,090.45 mi (1,754.91 km) |
| South Portland to Flower Hill (Maryland) | 471.64 mi (759.04 km) |
| South Portland to Flower Mound (Texas) | 1,617.85 mi (2,603.67 km) |
| South Portland to Flowing Wells (Arizona) | 2,325.59 mi (3,742.68 km) |
| South Portland to Foley (Alabama) | 1,319.54 mi (2,123.60 km) |
| South Portland to Folsom (California) | 2,626.31 mi (4,226.63 km) |
| South Portland to Fond du Lac (Wisconsin) | 904.85 mi (1,456.22 km) |
