| Rock Island to Friendly (Maryland) | 742.66 mi (1,195.20 km) |
| Rock Island to Friendswood (Texas) | 865.75 mi (1,393.29 km) |
| Rock Island to Frisco (Texas) | 668.51 mi (1,075.86 km) |
| Rock Island to Front Royal (Virginia) | 676.87 mi (1,089.31 km) |
| Rock Island to Fruit Cove (Florida) | 931.48 mi (1,499.07 km) |
| Rock Island to Fruita (Colorado) | 967.55 mi (1,557.13 km) |
| Rock Island to Fruitville (Florida) | 1,079.68 mi (1,737.57 km) |
| Rock Island to Fuller Heights (Florida) | 1,054.09 mi (1,696.40 km) |
| Rock Island to Fullerton (California) | 1,576.61 mi (2,537.31 km) |
| Rock Island to Fullerton (Pennsylvania) | 787.88 mi (1,267.98 km) |
| Rock Island to Fulshear (Texas) | 865.98 mi (1,393.66 km) |
| Rock Island to Fulton (Missouri) | 194.57 mi (313.13 km) |
| Rock Island to Fulton (New York) | 733.10 mi (1,179.82 km) |
| Rock Island to Fuquay-Varina (North Carolina) | 755.15 mi (1,215.29 km) |
| Rock Island to Gadsden (Alabama) | 572.52 mi (921.38 km) |
