| Keystone to Friendly (Maryland) | 802.60 mi (1,291.66 km) |
| Keystone to Friendswood (Texas) | 768.17 mi (1,236.26 km) |
| Keystone to Frisco (Texas) | 912.88 mi (1,469.13 km) |
| Keystone to Front Royal (Virginia) | 787.74 mi (1,267.74 km) |
| Keystone to Fruit Cove (Florida) | 148.22 mi (238.53 km) |
| Keystone to Fruita (Colorado) | 1,676.54 mi (2,698.14 km) |
| Keystone to Fruitville (Florida) | 55.81 mi (89.82 km) |
| Keystone to Fuller Heights (Florida) | 39.45 mi (63.48 km) |
| Keystone to Fullerton (California) | 2,118.85 mi (3,409.95 km) |
| Keystone to Fullerton (Pennsylvania) | 953.37 mi (1,534.30 km) |
| Keystone to Fulshear (Texas) | 809.98 mi (1,303.53 km) |
| Keystone to Fulton (Missouri) | 914.97 mi (1,472.50 km) |
| Keystone to Fulton (New York) | 1,104.25 mi (1,777.11 km) |
| Keystone to Fuquay-Varina (North Carolina) | 562.24 mi (904.84 km) |
| Keystone to Gadsden (Alabama) | 453.54 mi (729.90 km) |
