| Ontario to Frederick (Colorado) | 811.89 mi (1,306.61 km) |
| Ontario to Frederick (Maryland) | 2,237.71 mi (3,601.24 km) |
| Ontario to Fredericksburg (Texas) | 1,124.53 mi (1,809.76 km) |
| Ontario to Fredericksburg (Virginia) | 2,239.41 mi (3,603.98 km) |
| Ontario to Frederickson (Washington) | 935.24 mi (1,505.12 km) |
| Ontario to Freeport (Illinois) | 1,613.94 mi (2,597.38 km) |
| Ontario to Freeport (New York) | 2,434.88 mi (3,918.56 km) |
| Ontario to Freeport (Texas) | 1,354.03 mi (2,179.10 km) |
| Ontario to Fremont (California) | 343.82 mi (553.32 km) |
| Ontario to Fremont (Nebraska) | 1,257.82 mi (2,024.27 km) |
| Ontario to Fremont (Ohio) | 1,938.25 mi (3,119.31 km) |
| Ontario to French Valley (California) | 41.76 mi (67.20 km) |
| Ontario to Fresno (California) | 226.06 mi (363.81 km) |
| Ontario to Fresno (Texas) | 1,333.90 mi (2,146.71 km) |
| Ontario to Fridley (Minnesota) | 1,495.99 mi (2,407.56 km) |
