| Thornton to Frederick (Maryland) | 3,539.36 mi (5,696.05 km) |
| Thornton to Fredericksburg (Texas) | 4,827.06 mi (7,768.40 km) |
| Thornton to Fredericksburg (Virginia) | 3,595.82 mi (5,786.92 km) |
| Thornton to Frederickson (Washington) | 4,646.21 mi (7,477.35 km) |
| Thornton to Freeport (Illinois) | 3,866.29 mi (6,222.20 km) |
| Thornton to Freeport (New York) | 3,332.58 mi (5,363.26 km) |
| Thornton to Freeport (Texas) | 4,765.39 mi (7,669.16 km) |
| Thornton to Fremont (California) | 5,192.41 mi (8,356.38 km) |
| Thornton to Fremont (Nebraska) | 4,153.83 mi (6,684.94 km) |
| Thornton to Fremont (Ohio) | 3,668.75 mi (5,904.29 km) |
| Thornton to French Valley (California) | 5,272.94 mi (8,485.98 km) |
| Thornton to Fresno (California) | 5,171.33 mi (8,322.45 km) |
| Thornton to Fresno (Texas) | 4,737.97 mi (7,625.03 km) |
| Thornton to Fridley (Minnesota) | 3,860.05 mi (6,212.15 km) |
| Thornton to Friendly (Maryland) | 3,553.41 mi (5,718.66 km) |
