| Sintra to Frederick (Maryland) | 3,554.63 mi (5,720.63 km) |
| Sintra to Fredericksburg (Texas) | 4,921.22 mi (7,919.93 km) |
| Sintra to Fredericksburg (Virginia) | 3,588.74 mi (5,775.52 km) |
| Sintra to Frederickson (Washington) | 5,210.49 mi (8,385.48 km) |
| Sintra to Freeport (Illinois) | 4,056.85 mi (6,528.86 km) |
| Sintra to Freeport (New York) | 3,335.40 mi (5,367.80 km) |
| Sintra to Freeport (Texas) | 4,797.94 mi (7,721.55 km) |
| Sintra to Fremont (California) | 5,645.58 mi (9,085.69 km) |
| Sintra to Fremont (Nebraska) | 4,395.97 mi (7,074.62 km) |
| Sintra to Fremont (Ohio) | 3,779.07 mi (6,081.82 km) |
| Sintra to French Valley (California) | 5,625.57 mi (9,053.49 km) |
| Sintra to Fresno (California) | 5,592.03 mi (8,999.50 km) |
| Sintra to Fresno (Texas) | 4,780.74 mi (7,693.86 km) |
| Sintra to Fridley (Minnesota) | 4,134.31 mi (6,653.53 km) |
| Sintra to Friendly (Maryland) | 3,550.26 mi (5,713.59 km) |
