| Kostinbrod to Frederick (Maryland) | 4,898.83 mi (7,883.91 km) |
| Kostinbrod to Fredericksburg (Texas) | 6,194.78 mi (9,969.53 km) |
| Kostinbrod to Fredericksburg (Virginia) | 4,952.67 mi (7,970.56 km) |
| Kostinbrod to Frederickson (Washington) | 5,878.11 mi (9,459.90 km) |
| Kostinbrod to Freeport (Illinois) | 5,232.02 mi (8,420.13 km) |
| Kostinbrod to Freeport (New York) | 4,688.74 mi (7,545.80 km) |
| Kostinbrod to Freeport (Texas) | 6,131.73 mi (9,868.06 km) |
| Kostinbrod to Fremont (California) | 6,470.77 mi (10,413.69 km) |
| Kostinbrod to Fremont (Nebraska) | 5,512.65 mi (8,871.76 km) |
| Kostinbrod to Fremont (Ohio) | 5,036.16 mi (8,104.92 km) |
| Kostinbrod to French Valley (California) | 6,591.59 mi (10,608.14 km) |
| Kostinbrod to Fresno (California) | 6,465.15 mi (10,404.65 km) |
| Kostinbrod to Fresno (Texas) | 6,104.77 mi (9,824.68 km) |
| Kostinbrod to Fridley (Minnesota) | 5,216.50 mi (8,395.15 km) |
| Kostinbrod to Friendly (Maryland) | 4,910.50 mi (7,902.69 km) |
