| Ontario to Federal Way (Washington) | 949.28 mi (1,527.73 km) |
| Ontario to Felida (Washington) | 850.34 mi (1,368.50 km) |
| Ontario to Fenton (Michigan) | 1,917.00 mi (3,085.12 km) |
| Ontario to Fergus Falls (Minnesota) | 1,409.45 mi (2,268.29 km) |
| Ontario to Ferguson (Missouri) | 1,547.32 mi (2,490.17 km) |
| Ontario to Fernandina Beach (Florida) | 2,112.40 mi (3,399.58 km) |
| Ontario to Ferndale (Maryland) | 2,280.46 mi (3,670.05 km) |
| Ontario to Ferndale (Michigan) | 1,943.83 mi (3,128.29 km) |
| Ontario to Ferndale (Washington) | 1,054.94 mi (1,697.76 km) |
| Ontario to Fernley (Nevada) | 391.54 mi (630.13 km) |
| Ontario to Ferry Pass (Florida) | 1,786.71 mi (2,875.43 km) |
| Ontario to Festus (Missouri) | 1,539.17 mi (2,477.06 km) |
| Ontario to Fife (Washington) | 944.46 mi (1,519.96 km) |
| Ontario to Fillmore (California) | 78.91 mi (127.00 km) |
| Ontario to Findlay (Ohio) | 1,909.74 mi (3,073.43 km) |
