| Boulder to Fisciano | 5,704.30 mi (9,180.18 km) |
| Boulder to Fiuggi | 5,596.14 mi (9,006.11 km) |
| Boulder to Fiume Veneto | 5,371.98 mi (8,645.37 km) |
| Boulder to Fiumefreddo di Sicilia | 5,871.53 mi (9,449.32 km) |
| Boulder to Fiumicino | 5,563.10 mi (8,952.94 km) |
| Boulder to Flero | 5,307.56 mi (8,541.70 km) |
| Boulder to Florence | 5,428.90 mi (8,736.98 km) |
| Boulder to Floridia | 5,906.81 mi (9,506.08 km) |
| Boulder to Foggia | 5,694.22 mi (9,163.96 km) |
| Boulder to Foiano della Chiana | 5,474.38 mi (8,810.17 km) |
| Boulder to Folignano | 5,559.17 mi (8,946.62 km) |
| Boulder to Foligno | 5,520.15 mi (8,883.82 km) |
| Boulder to Follonica | 5,453.62 mi (8,776.75 km) |
| Boulder to Fondi | 5,625.95 mi (9,054.10 km) |
| Boulder to Fontanafredda | 5,364.77 mi (8,633.77 km) |
