| Keystone to Frederick (Colorado) | 1,517.02 mi (2,441.41 km) |
| Keystone to Frederick (Maryland) | 835.37 mi (1,344.40 km) |
| Keystone to Fredericksburg (Texas) | 991.75 mi (1,596.07 km) |
| Keystone to Fredericksburg (Virginia) | 761.82 mi (1,226.02 km) |
| Keystone to Frederickson (Washington) | 2,501.68 mi (4,026.06 km) |
| Keystone to Freeport (Illinois) | 1,054.77 mi (1,697.49 km) |
| Keystone to Freeport (New York) | 1,004.90 mi (1,617.23 km) |
| Keystone to Freeport (Texas) | 776.18 mi (1,249.15 km) |
| Keystone to Fremont (California) | 2,358.21 mi (3,795.17 km) |
| Keystone to Fremont (Nebraska) | 1,207.76 mi (1,943.70 km) |
| Keystone to Fremont (Ohio) | 914.03 mi (1,471.00 km) |
| Keystone to French Valley (California) | 2,071.31 mi (3,333.46 km) |
| Keystone to Fresno (California) | 2,233.99 mi (3,595.25 km) |
| Keystone to Fresno (Texas) | 784.58 mi (1,262.65 km) |
| Keystone to Fridley (Minnesota) | 1,309.35 mi (2,107.19 km) |
