| Rockford to Floha | 4,487.92 mi (7,222.60 km) |
| Rockford to Florsheim | 4,356.25 mi (7,010.70 km) |
| Rockford to Florstadt | 4,360.14 mi (7,016.97 km) |
| Rockford to Forchheim | 4,463.39 mi (7,183.14 km) |
| Rockford to Foritz | 4,444.27 mi (7,152.36 km) |
| Rockford to Forst (Lausitz) | 4,504.85 mi (7,249.85 km) |
| Rockford to Frankenberg | 4,484.46 mi (7,217.04 km) |
| Rockford to Frankenberg | 4,328.63 mi (6,966.26 km) |
| Rockford to Frankenthal | 4,372.19 mi (7,036.36 km) |
| Rockford to Frankfurt | 4,361.64 mi (7,019.38 km) |
| Rockford to Frankfurt (Oder) | 4,476.51 mi (7,204.25 km) |
| Rockford to Frechen | 4,262.55 mi (6,859.91 km) |
| Rockford to Freiberg | 4,495.02 mi (7,234.04 km) |
| Rockford to Freiberg am Neckar | 4,427.40 mi (7,125.22 km) |
| Rockford to Freiburg im Breisgau | 4,414.36 mi (7,104.23 km) |
