| Harpenden to Floha | 582.40 mi (937.28 km) |
| Harpenden to Florsheim | 402.12 mi (647.15 km) |
| Harpenden to Florstadt | 413.05 mi (664.74 km) |
| Harpenden to Forchheim | 518.64 mi (834.67 km) |
| Harpenden to Foritz | 512.75 mi (825.19 km) |
| Harpenden to Forst (Lausitz) | 639.55 mi (1,029.26 km) |
| Harpenden to Frankenberg | 580.20 mi (933.75 km) |
| Harpenden to Frankenberg | 397.25 mi (639.31 km) |
| Harpenden to Frankenthal | 412.10 mi (663.21 km) |
| Harpenden to Frankfurt | 410.14 mi (660.06 km) |
| Harpenden to Frankfurt (Oder) | 632.77 mi (1,018.35 km) |
| Harpenden to Frechen | 315.32 mi (507.45 km) |
| Harpenden to Freiberg | 593.21 mi (954.69 km) |
| Harpenden to Freiberg am Neckar | 465.23 mi (748.72 km) |
| Harpenden to Freiburg im Breisgau | 450.09 mi (724.36 km) |
