| South Portland to Frederick (Colorado) | 1,787.68 mi (2,876.99 km) |
| South Portland to Frederick (Maryland) | 468.63 mi (754.19 km) |
| South Portland to Fredericksburg (Texas) | 1,815.11 mi (2,921.14 km) |
| South Portland to Fredericksburg (Virginia) | 525.66 mi (845.97 km) |
| South Portland to Frederickson (Washington) | 2,492.18 mi (4,010.77 km) |
| South Portland to Freeport (Illinois) | 980.32 mi (1,577.67 km) |
| South Portland to Freeport (New York) | 266.19 mi (428.40 km) |
| South Portland to Freeport (Texas) | 1,714.64 mi (2,759.45 km) |
| South Portland to Fremont (California) | 2,701.12 mi (4,347.03 km) |
| South Portland to Fremont (Nebraska) | 1,336.74 mi (2,151.27 km) |
| South Portland to Fremont (Ohio) | 671.34 mi (1,080.41 km) |
| South Portland to French Valley (California) | 2,584.16 mi (4,158.81 km) |
| South Portland to Fresno (California) | 2,615.19 mi (4,208.74 km) |
| South Portland to Fresno (Texas) | 1,691.93 mi (2,722.90 km) |
| South Portland to Fridley (Minnesota) | 1,135.33 mi (1,827.14 km) |
