| Castro Valley to Forli | 6,091.27 mi (9,802.95 km) |
| Castro Valley to Forlimpopoli | 6,096.45 mi (9,811.29 km) |
| Castro Valley to Formello | 6,223.68 mi (10,016.05 km) |
| Castro Valley to Formia | 6,305.56 mi (10,147.81 km) |
| Castro Valley to Formigine | 6,038.49 mi (9,718.01 km) |
| Castro Valley to Fossano | 5,948.06 mi (9,572.48 km) |
| Castro Valley to Fossombrone | 6,143.20 mi (9,886.53 km) |
| Castro Valley to Francavilla al Mare | 6,258.49 mi (10,072.07 km) |
| Castro Valley to Francavilla Fontana | 6,458.87 mi (10,394.54 km) |
| Castro Valley to Francofonte | 6,575.86 mi (10,582.82 km) |
| Castro Valley to Frascati | 6,247.10 mi (10,053.74 km) |
| Castro Valley to Frattamaggiore | 6,343.88 mi (10,209.48 km) |
| Castro Valley to Frattaminore | 6,342.44 mi (10,207.17 km) |
| Castro Valley to Frosinone | 6,276.82 mi (10,101.56 km) |
| Castro Valley to Fucecchio | 6,083.86 mi (9,791.03 km) |
