| Thetford to Frederick (Maryland) | 3,670.76 mi (5,907.52 km) |
| Thetford to Fredericksburg (Texas) | 4,964.88 mi (7,990.21 km) |
| Thetford to Fredericksburg (Virginia) | 3,726.19 mi (5,996.72 km) |
| Thetford to Frederickson (Washington) | 4,787.71 mi (7,705.08 km) |
| Thetford to Freeport (Illinois) | 4,005.96 mi (6,446.97 km) |
| Thetford to Freeport (New York) | 3,462.59 mi (5,572.51 km) |
| Thetford to Freeport (Texas) | 4,900.57 mi (7,886.71 km) |
| Thetford to Fremont (California) | 5,335.66 mi (8,586.91 km) |
| Thetford to Fremont (Nebraska) | 4,295.30 mi (6,912.62 km) |
| Thetford to Fremont (Ohio) | 3,805.06 mi (6,123.65 km) |
| Thetford to French Valley (California) | 5,416.54 mi (8,717.08 km) |
| Thetford to Fresno (California) | 5,314.85 mi (8,553.43 km) |
| Thetford to Fresno (Texas) | 4,873.56 mi (7,843.23 km) |
| Thetford to Fridley (Minnesota) | 4,001.95 mi (6,440.51 km) |
| Thetford to Friendly (Maryland) | 3,683.85 mi (5,928.59 km) |
