| Llantwit Major to Frederick (Maryland) | 3,521.59 mi (5,667.45 km) |
| Llantwit Major to Fredericksburg (Texas) | 4,831.44 mi (7,775.45 km) |
| Llantwit Major to Fredericksburg (Virginia) | 3,574.84 mi (5,753.15 km) |
| Llantwit Major to Frederickson (Washington) | 4,729.43 mi (7,611.28 km) |
| Llantwit Major to Freeport (Illinois) | 3,880.57 mi (6,245.17 km) |
| Llantwit Major to Freeport (New York) | 3,310.87 mi (5,328.33 km) |
| Llantwit Major to Freeport (Texas) | 4,759.19 mi (7,659.18 km) |
| Llantwit Major to Fremont (California) | 5,259.10 mi (8,463.70 km) |
| Llantwit Major to Fremont (Nebraska) | 4,178.87 mi (6,725.25 km) |
| Llantwit Major to Fremont (Ohio) | 3,667.93 mi (5,902.97 km) |
| Llantwit Major to French Valley (California) | 5,323.04 mi (8,566.61 km) |
| Llantwit Major to Fresno (California) | 5,232.42 mi (8,420.76 km) |
| Llantwit Major to Fresno (Texas) | 4,733.30 mi (7,617.50 km) |
| Llantwit Major to Fridley (Minnesota) | 3,888.58 mi (6,258.06 km) |
| Llantwit Major to Friendly (Maryland) | 3,532.72 mi (5,685.36 km) |
