| Letterkenny to Floha | 907.59 mi (1,460.63 km) |
| Letterkenny to Florsheim | 758.12 mi (1,220.08 km) |
| Letterkenny to Florstadt | 763.27 mi (1,228.36 km) |
| Letterkenny to Forchheim | 867.88 mi (1,396.71 km) |
| Letterkenny to Foritz | 852.79 mi (1,372.43 km) |
| Letterkenny to Forst (Lausitz) | 944.13 mi (1,519.44 km) |
| Letterkenny to Frankenberg | 904.60 mi (1,455.82 km) |
| Letterkenny to Frankenberg | 735.41 mi (1,183.52 km) |
| Letterkenny to Frankenthal | 773.72 mi (1,245.18 km) |
| Letterkenny to Frankfurt | 763.93 mi (1,229.42 km) |
| Letterkenny to Frankfurt (Oder) | 925.66 mi (1,489.70 km) |
| Letterkenny to Frechen | 664.96 mi (1,070.14 km) |
| Letterkenny to Freiberg | 916.51 mi (1,474.99 km) |
| Letterkenny to Freiberg am Neckar | 829.07 mi (1,334.26 km) |
| Letterkenny to Freiburg im Breisgau | 821.88 mi (1,322.68 km) |
