| Willoughby to Friendly (Maryland) | 307.75 mi (495.27 km) |
| Willoughby to Friendswood (Texas) | 1,138.76 mi (1,832.66 km) |
| Willoughby to Frisco (Texas) | 1,026.94 mi (1,652.70 km) |
| Willoughby to Front Royal (Virginia) | 253.34 mi (407.71 km) |
| Willoughby to Fruit Cove (Florida) | 798.02 mi (1,284.29 km) |
| Willoughby to Fruita (Colorado) | 1,441.76 mi (2,320.29 km) |
| Willoughby to Fruitville (Florida) | 990.73 mi (1,594.43 km) |
| Willoughby to Fuller Heights (Florida) | 948.76 mi (1,526.89 km) |
| Willoughby to Fullerton (California) | 2,048.85 mi (3,297.31 km) |
| Willoughby to Fullerton (Pennsylvania) | 316.12 mi (508.74 km) |
| Willoughby to Fulshear (Texas) | 1,155.26 mi (1,859.21 km) |
| Willoughby to Fulton (Missouri) | 587.97 mi (946.24 km) |
| Willoughby to Fulton (New York) | 279.28 mi (449.45 km) |
| Willoughby to Fuquay-Varina (North Carolina) | 441.45 mi (710.45 km) |
| Willoughby to Gadsden (Alabama) | 584.29 mi (940.33 km) |
