| Rockford to Friesoythe | 4,220.34 mi (6,791.98 km) |
| Rockford to Fritzlar | 4,343.12 mi (6,989.58 km) |
| Rockford to Frohburg | 4,461.63 mi (7,180.30 km) |
| Rockford to Frondenberg | 4,275.73 mi (6,881.12 km) |
| Rockford to Fulda | 4,380.16 mi (7,049.19 km) |
| Rockford to Fuldabruck | 4,345.00 mi (6,992.61 km) |
| Rockford to Fuldatal | 4,343.29 mi (6,989.86 km) |
| Rockford to Furstenau | 4,232.56 mi (6,811.65 km) |
| Rockford to Furstenfeldbruck | 4,534.09 mi (7,296.91 km) |
| Rockford to Furstenwalde | 4,459.17 mi (7,176.34 km) |
| Rockford to Furth | 4,383.39 mi (7,054.39 km) |
| Rockford to Furth | 4,471.64 mi (7,196.41 km) |
| Rockford to Furth im Wald | 4,544.35 mi (7,313.43 km) |
| Rockford to Furtwangen im Schwarzwald | 4,425.73 mi (7,122.52 km) |
| Rockford to Fussen | 4,538.83 mi (7,304.54 km) |
