| Castle Rock to Forli | 5,453.81 mi (8,777.06 km) |
| Castle Rock to Forlimpopoli | 5,459.17 mi (8,785.68 km) |
| Castle Rock to Formello | 5,572.33 mi (8,967.79 km) |
| Castle Rock to Formia | 5,656.50 mi (9,103.26 km) |
| Castle Rock to Formigine | 5,396.58 mi (8,684.96 km) |
| Castle Rock to Fossano | 5,285.49 mi (8,506.18 km) |
| Castle Rock to Fossombrone | 5,506.81 mi (8,862.36 km) |
| Castle Rock to Francavilla al Mare | 5,622.66 mi (9,048.80 km) |
| Castle Rock to Francavilla Fontana | 5,833.07 mi (9,387.42 km) |
| Castle Rock to Francofonte | 5,906.97 mi (9,506.34 km) |
| Castle Rock to Frascati | 5,595.69 mi (9,005.39 km) |
| Castle Rock to Frattamaggiore | 5,697.04 mi (9,168.50 km) |
| Castle Rock to Frattaminore | 5,695.61 mi (9,166.19 km) |
| Castle Rock to Frosinone | 5,628.61 mi (9,058.38 km) |
| Castle Rock to Fucecchio | 5,434.35 mi (8,745.74 km) |
