| Merthyr Tudful to Gages Lake (Illinois) | 3,807.61 mi (6,127.75 km) |
| Merthyr Tudful to Gahanna (Ohio) | 3,712.68 mi (5,974.98 km) |
| Merthyr Tudful to Gainesville (Florida) | 4,183.15 mi (6,732.13 km) |
| Merthyr Tudful to Gainesville (Georgia) | 4,019.84 mi (6,469.31 km) |
| Merthyr Tudful to Gainesville (Texas) | 4,584.60 mi (7,378.19 km) |
| Merthyr Tudful to Gainesville (Virginia) | 3,556.33 mi (5,723.35 km) |
| Merthyr Tudful to Gaithersburg (Maryland) | 3,523.80 mi (5,671.00 km) |
| Merthyr Tudful to Galena Park (Texas) | 4,708.67 mi (7,577.87 km) |
| Merthyr Tudful to Galesburg (Illinois) | 3,964.21 mi (6,379.78 km) |
| Merthyr Tudful to Galion (Ohio) | 3,677.13 mi (5,917.77 km) |
| Merthyr Tudful to Gallatin (Tennessee) | 4,027.09 mi (6,480.97 km) |
| Merthyr Tudful to Gallup (New Mexico) | 4,917.81 mi (7,914.45 km) |
| Merthyr Tudful to Galt (California) | 5,182.45 mi (8,340.34 km) |
| Merthyr Tudful to Galveston (Texas) | 4,720.55 mi (7,597.00 km) |
| Merthyr Tudful to Gantt (South Carolina) | 3,937.63 mi (6,337.00 km) |
