| Difficult Run to Friesoythe | 3,956.45 mi (6,367.29 km) |
| Difficult Run to Fritzlar | 4,064.40 mi (6,541.02 km) |
| Difficult Run to Frohburg | 4,194.53 mi (6,750.44 km) |
| Difficult Run to Frondenberg | 3,995.02 mi (6,429.36 km) |
| Difficult Run to Fulda | 4,096.93 mi (6,593.37 km) |
| Difficult Run to Fuldabruck | 4,068.39 mi (6,547.45 km) |
| Difficult Run to Fuldatal | 4,067.68 mi (6,546.30 km) |
| Difficult Run to Furstenau | 3,962.59 mi (6,377.18 km) |
| Difficult Run to Furstenfeldbruck | 4,233.54 mi (6,813.23 km) |
| Difficult Run to Furstenwalde | 4,211.12 mi (6,777.14 km) |
| Difficult Run to Furth | 4,087.66 mi (6,578.45 km) |
| Difficult Run to Furth | 4,182.64 mi (6,731.31 km) |
| Difficult Run to Furth im Wald | 4,261.16 mi (6,857.68 km) |
| Difficult Run to Furtwangen im Schwarzwald | 4,111.87 mi (6,617.42 km) |
| Difficult Run to Fussen | 4,230.17 mi (6,807.80 km) |
