| Castlebar to Friesoythe | 706.77 mi (1,137.43 km) |
| Castlebar to Fritzlar | 801.50 mi (1,289.89 km) |
| Castlebar to Frohburg | 936.26 mi (1,506.77 km) |
| Castlebar to Frondenberg | 731.90 mi (1,177.88 km) |
| Castlebar to Fulda | 832.47 mi (1,339.73 km) |
| Castlebar to Fuldabruck | 806.38 mi (1,297.74 km) |
| Castlebar to Fuldatal | 806.17 mi (1,297.40 km) |
| Castlebar to Furstenau | 706.74 mi (1,137.39 km) |
| Castlebar to Furstenfeldbruck | 971.32 mi (1,563.19 km) |
| Castlebar to Furstenwalde | 970.03 mi (1,561.11 km) |
| Castlebar to Furth | 823.35 mi (1,325.06 km) |
| Castlebar to Furth | 917.58 mi (1,476.70 km) |
| Castlebar to Furth im Wald | 996.28 mi (1,603.35 km) |
| Castlebar to Furtwangen im Schwarzwald | 858.10 mi (1,380.98 km) |
| Castlebar to Fussen | 972.50 mi (1,565.09 km) |
